APA (7th ed.) Citation

Gutschick, V. P. (1987). A functional biology of crop plants. Timber Press.

Chicago Style (17th ed.) Citation

Gutschick, Vincent P. A Functional Biology of Crop Plants. Portland, Or.: Timber Press, 1987.

MLA (9th ed.) Citation

Gutschick, Vincent P. A Functional Biology of Crop Plants. Timber Press, 1987.