^"Human PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.
^"Mouse PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.
^Wang J, Su SF, Dresser MJ, Schaner ME, Washington CB, Giacomini KM (Feb 1998). "Na(+)-dependent purine nucleoside transporter from human kidney: cloning and functional characterization". Am J Physiol. 273 (6 Pt 2): F1058-65. doi:10.1152/ajprenal.1997.273.6.F1058. PMID9435697.