Coon, N. (1977). The dictionary of useful plants. Rodale Press.
Cita Chicago (17th ed.)Coon, Nelson. The Dictionary of Useful Plants. Emmaus: Rodale Press, 1977.
Cita MLA (9th ed.)Coon, Nelson. The Dictionary of Useful Plants. Rodale Press, 1977.
Atenció: Aquestes cites poden no estar 100% correctes.