Cita APA (7th ed.)

NORTHINGTON, D. K., & SCHNEIDER, E. L. (1996). The botanical world.-- ed.2. WCB.

Cita Chicago (17th ed.)

NORTHINGTON, David K., i Edward L. SCHNEIDER. The Botanical World.-- Ed.2. Dubuque: WCB, 1996.

Cita MLA (9th ed.)

NORTHINGTON, David K., i Edward L. SCHNEIDER. The Botanical World.-- Ed.2. WCB, 1996.