APA (7th ed.) Citation

Leonard, D. K. (1980). Soils, crops, and fertilizer use: What, how, and why guide (3rd ed. rev. and expanded.). Peace Corps, Information Collection & Exchange.

Chicago Style (17th ed.) Citation

Leonard, David K. Soils, Crops, and Fertilizer Use: What, How, and Why Guide. 3rd ed. rev. and expanded. Washington, D.C.: Peace Corps, Information Collection & Exchange, 1980.

MLA (9th ed.) Citation

Leonard, David K. Soils, Crops, and Fertilizer Use: What, How, and Why Guide. 3rd ed. rev. and expanded. Peace Corps, Information Collection & Exchange, 1980.