Potash & Phosphate Institute (Atlanta, Ga.)\nInternational Plant Nutrition Institute. (1923). Better Crops With Plant Food. Potash & Phosphate Institute.
Citação do estilo Chicago (17ª ed.)Potash & Phosphate Institute (Atlanta, Ga.)\nInternational Plant Nutrition Institute. Better Crops With Plant Food. Atlanta, Ga: Potash & Phosphate Institute, 1923.
Citação MLA (8ª ed.)Potash & Phosphate Institute (Atlanta, Ga.)\nInternational Plant Nutrition Institute. Better Crops With Plant Food. Potash & Phosphate Institute, 1923.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.