APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

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

MLA (9th ed.) Citation

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