Johnson, M. H., & Everitt, B. J. (1995). Essential reproduction (4th ed.). Blackwell Science.
Chicago Style aipamenaJohnson, M. H., and Barry J. Everitt. Essential Reproduction. 4th ed. London: Blackwell Science, 1995.
MLA aipamenaJohnson, M. H., and Barry J. Everitt. Essential Reproduction. 4th ed. Blackwell Science, 1995.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.