Langhans, R. W., & Langhans, V. (1983). Greenhouse management: A guide to structures, environmental control, materials handling, crop programming, and business analysis (2nd ed.). Halcyon Press of Ithaca.
Chicago Style (17th ed.) CitationLanghans, Robert W., and Virginia Langhans. Greenhouse Management: A Guide to Structures, Environmental Control, Materials Handling, Crop Programming, and Business Analysis. 2nd ed. Ithaca, N.Y.: Halcyon Press of Ithaca, 1983.
MLA (9th ed.) CitationLanghans, Robert W., and Virginia Langhans. Greenhouse Management: A Guide to Structures, Environmental Control, Materials Handling, Crop Programming, and Business Analysis. 2nd ed. Halcyon Press of Ithaca, 1983.
Warning: These citations may not always be 100% accurate.