Cita APA

Walker, J. C. n. 1., & Walker, J. C. n. 1. (1952). Diseases of vegetable crops. New York, New York: McGraw-Hill.

Citación estilo Chicago

Walker, John Charles n. 1893, y John Charles n. 1893 Walker. Diseases of Vegetable Crops. New York, New York: McGraw-Hill, 1952.

Cita MLA

Walker, John Charles n. 1893, y John Charles n. 1893 Walker. Diseases of Vegetable Crops. New York, New York: McGraw-Hill, 1952.