"A Dictionary of the Pathan Tribes of the North West Frontier of India" (Part I. North of the Kabul River, including all Mohmands, and tribes west of the Indus), published by The General Staff Army Headquarter, Calcutta, India -(Originally Published 1910) :: The Kakazai Pashtuns are mentioned on Page 22 (under ‘K’ -Kakazai), Page 12 (under ‘D’ -Daulat Khel - A sub-division of Kakazai Pathans), Page 26 (under 'K' - Khulozai - A sub-division of Kakazai Pathans), Page 29 (under ‘M’ -Maghdud Khel, Mahsud Khel and Mahmud Khel - sub-divisions of Kakazai Pathans), Page 47 (under 'U' - Umar Khel - A sub-division of Kakazai Pathans) and Page 50 (under 'Y' -Yusaf Khel - A sub-division of Kakazai Pathans)
"A Dictionary of the Pathan Tribes of the North West Frontier of India" (Part I. North of the Kabul River, including all Mohmands, and tribes west of the Indus), published by The General Staff Army Headquarter, Calcutta, India -(Originally Published 1910) :: The Kakazai Pashtuns are mentioned on Page 22 (under ‘K’ -Kakazai), Page 12 (under ‘D’ -Daulat Khel - A sub-division of Kakazai Pathans), Page 26 (under 'K' - Khulozai - A sub-division of Kakazai Pathans), Page 29 (under ‘M’ -Maghdud Khel, Mahsud Khel and Mahmud Khel - sub-divisions of Kakazai Pathans), Page 47 (under 'U' - Umar Khel - A sub-division of Kakazai Pathans) and Page 50 (under 'Y' -Yusaf Khel - A sub-division of Kakazai Pathans)
Churchill, Winston S. (1897). The Story of the Malakand Field Force: An Episode of the Frontier War. Kessinger Publishing, LLC. p. 91. ISBN978-1419184109.
Rasheed, Haroon (2002). History of the Pathans: The Sarabani Pathans, Vol 2. Haroon Rashid — Original from the University of Michigan. pp. 257–262. ASINB00AJIRNNU.
Noelle, Christine (1997). State and Tribe in Nineteenth-Century Afghanistan: The Reign of Amir Dost Muhammad Khan (1826-1863). Routledge. pp. 179–192. ISBN978-0700706297.
A. H. McMahon and, A. D. G. Ramsay (1901). Report on the tribes of Dir, Swat, and Bajour together with the Utman-khel and Sam Ranizai. Saeed Book Bank, Pakistan. p. 9. ASINB0006EF1OA.
افغانستاند, ټول (23 June 2013). "پښتانه څوک دی ؟ لمړۍ برخه". ددي ويبپاڼي د مضامينو بيا نشرول چه مأخذ يی ټول افغانستان ياد شي مجاز دئ (in Pashto).
A. H. McMahon and, A. D. G. Ramsay (1901). Report on the tribes of Dir, Swat, and Bajour together with the Utman-khel and Sam Ranizai. Saeed Book Bank, Pakistan. p. 9. ASINB0006EF1OA.
"Tarkanri". Britannica. Vol. 21. United Kingdom: Encyclopædia Britannica: A New Survey of Universal Knowledge. 1952. p. 816. ASIN B004HZTLWW.
"Frontier and Overseas Expeditions from India" Volume One published by Government Mono Type Press, Simla, India - (Originally Published 1907) :: Kakazai / Kakayzai Pathan Tribe is mentioned between Page 515- 555-You can read these volumes online, thanks to Internet Archives though their market value is around $11000 ::
D. K. Behera (eds.), G. Pfeffer & (2002). The Pashtun Tribal System by Bernt Glatzer — Chapter 10 in: Concept of Tribal Society (Contemporary Society: Tribal Studies, Vol 5). Concept Publishers, New Delhi, India. pp. 265–282. ISBN9788170229834. {{cite book}}: |last= has generic name (help)