APA (7th ed.) Citation

Nyvall, R. F. (1979). Field crop diseases handbook. AVI Pub. Co..

Chicago Style (17th ed.) Citation

Nyvall, Robert F. Field Crop Diseases Handbook. Westport, Conn.: AVI Pub. Co., 1979.

MLA (9th ed.) Citation

Nyvall, Robert F. Field Crop Diseases Handbook. AVI Pub. Co., 1979.