Williams, C. G. (2009). Conifer reproductive biology. Springer Netherlands.
Chicago Style aipamenaWilliams, Claire G. Conifer Reproductive Biology. Dordrecht: Springer Netherlands, 2009.
MLA aipamenaWilliams, Claire G. Conifer Reproductive Biology. Springer Netherlands, 2009.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.