APA (7th ed.) Citation

Walker, J. C. (1952). Diseases of vegetable crops. McGraw-Hill.

Chicago Style (17th ed.) Citation

Walker, John C. Diseases of Vegetable Crops. New York (u.a.): McGraw-Hill, 1952.

MLA (9th ed.) Citation

Walker, John C. Diseases of Vegetable Crops. McGraw-Hill, 1952.