Dyfyniad APA

CROCKETT, J. U. (1977). Herbs James Underwood Crockett. Time-Life Books.

Dyfyniad Arddull Chicago

CROCKETT, James Underwood. Herbs James Underwood Crockett. Time-Life Books, 1977.

Dyfyniad MLA

CROCKETT, James Underwood. Herbs James Underwood Crockett. Time-Life Books, 1977.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.