American Society of Agronomy, National Fertilizer Association (1925-1955), Bahrt, G. M., & Hambidge, G. (1941). Hunger signs in crops: A symposium. The American Society of Agronomy and National Fertilizer Association.
Chicago Style (17th ed.) CitationAmerican Society of Agronomy, National Fertilizer Association (1925-1955), George Martin Bahrt, and Gove Hambidge. Hunger Signs in Crops: A Symposium. Washington: The American Society of Agronomy and National Fertilizer Association, 1941.
MLA (9th ed.) CitationAmerican Society of Agronomy, et al. Hunger Signs in Crops: A Symposium. The American Society of Agronomy and National Fertilizer Association, 1941.
Warning: These citations may not always be 100% accurate.