Cita APA (7a ed.)

Gilkey, H. M. (1957). Weeds of the Pacific Northwest. Oregon State College.

Cita Chicago Style (17a ed.)

Gilkey, Helen M. Weeds of the Pacific Northwest. [Corvallis]: Oregon State College, 1957.

Cita MLA (8a ed.)

Gilkey, Helen M. Weeds of the Pacific Northwest. Oregon State College, 1957.

Precaución: Estas citas no son 100% exactas.