Farley, J. (1982). Gametes & spores: Ideas about sexual reproduction 1750 - 1914 / John Farley. Johns Hopkins University.
Chicago-viite (17. p.)Farley, John. Gametes & Spores: Ideas About Sexual Reproduction 1750 - 1914 / John Farley. Baltimore, Md. [u.a.]: Johns Hopkins University, 1982.
MLA-viite (8. p.)Farley, John. Gametes & Spores: Ideas About Sexual Reproduction 1750 - 1914 / John Farley. Johns Hopkins University, 1982.
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