APA (7th ed.) Citation

O, F. A. FERTILIZER AND PLANT NUTRITION GUIDE. FAO.

Chicago Style (17th ed.) Citation

O, F A. FERTILIZER AND PLANT NUTRITION GUIDE. FAO.

MLA (8th ed.) Citation

O, F A. FERTILIZER AND PLANT NUTRITION GUIDE. FAO.

Warning: These citations may not always be 100% accurate.