Nyvall, R. F. (1989). Field Crop Diseases Handbook (2nd ed.). New York: Van Nostrand Reinhold.
Chicago Style CitationNyvall, Robert F. Field Crop Diseases Handbook. 2nd ed. New York: Van Nostrand Reinhold, 1989.
MLA CitationNyvall, Robert F. Field Crop Diseases Handbook. 2nd ed. New York: Van Nostrand Reinhold, 1989.
Warning: These citations may not always be 100% accurate.