Hill, A. F. (1976). Economic botany: A textbook of useful plants and plant products (10th ed.). Tata McGraw-Hill Publishing Company.
Dyfyniad Arddull ChicagoHill, Albert F. Economic Botany: A Textbook of Useful Plants and Plant Products. 10th ed. New Delhi: Tata McGraw-Hill Publishing Company, 1976.
Dyfyniad MLAHill, Albert F. Economic Botany: A Textbook of Useful Plants and Plant Products. 10th ed. Tata McGraw-Hill Publishing Company, 1976.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.