APA

Gutschick V. P., . (1987). <A> functional biology of crop plants. Portland, Oregon: Timber Press.

Chicago

Gutschick Vincent P, . 1987. <A> functional biology of crop plants. Portland, Oregon: Timber Press.

Harvard

Gutschick V. P., . (1987). <A> functional biology of crop plants. Portland, Oregon: Timber Press.

MLA

Gutschick Vincent P, . <A> functional biology of crop plants. Portland, Oregon: Timber Press. 1987.