Northington, D. K. (1996). The botanical world. Dubuque, IA: Wm. C. Brown Publishers.
Chicago Style aipamenaNorthington, David K. The Botanical World. Dubuque, IA: Wm. C. Brown Publishers, 1996.
MLA aipamenaNorthington, David K. The Botanical World. Dubuque, IA: Wm. C. Brown Publishers, 1996.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.