^ed.-in-chief, George M. Garrity (2012). Bergey's manual of systematic bacteriology (2nd ed.). New York: Springer Science + Business Media. ISBN978-0-387-68233-4. {{cite book}}: |last1= has generic name (help)
^Cordell, Geoffrey A., ed. (2002). The alkaloids: Chemistry and biology. Amsterdam: Academic Press. ISBN0-12-469558-2.
^Sigel, edited by Astrid; Sigel, Helmut (2002). Metal Ions in Biological Systems. Hoboken: Marcel Dekker Inc. ISBN0-8247-4444-6. {{cite book}}: |first1= has generic name (help)