Schuh, R. T., & Brower, A. V. Z. (2009). Biological systematics: Principles and applications (2nd ed.). Comstock Pub. Associates/Cornell University Press.
Chicago-viite (17. p.)Schuh, Randall T., ja Andrew V. Z. Brower. Biological Systematics: Principles and Applications. 2nd ed. Ithaca: Comstock Pub. Associates/Cornell University Press, 2009.
MLA-viite (9. p.)Schuh, Randall T., ja Andrew V. Z. Brower. Biological Systematics: Principles and Applications. 2nd ed. Comstock Pub. Associates/Cornell University Press, 2009.
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