Cita APA (7a ed.)

Wulff, E. V., Brissenden, E., & Merrill, E. D. (1943). An introduction to historical plant geography. Chronica Botanica.

Cita Chicago Style (17a ed.)

Wulff, E. V., Elizabeth Brissenden, y Elmer D. Merrill. An Introduction to Historical Plant Geography. Waltham: Chronica Botanica, 1943.

Cita MLA (8a ed.)

Wulff, E. V., et al. An Introduction to Historical Plant Geography. Chronica Botanica, 1943.