Potash & Phosphate Institute (Atlanta, Ga.)\nInternational Plant Nutrition Institute. (1923). Better Crops With Plant Food. Potash & Phosphate Institute.
Lua i Stíl Chicago (17ú heag.)Potash & Phosphate Institute (Atlanta, Ga.)\nInternational Plant Nutrition Institute. Better Crops With Plant Food. Atlanta, Ga: Potash & Phosphate Institute, 1923.
Lua MLA (8ú heag.)Potash & Phosphate Institute (Atlanta, Ga.)\nInternational Plant Nutrition Institute. Better Crops With Plant Food. Potash & Phosphate Institute, 1923.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.