Dyfyniad APA

Crockett, J. U., Donovan, H., Merrilees, R. A., & Wolff, B. (1979). Landscape gardening. Time-Life.

Dyfyniad Arddull Chicago

Crockett, James Underwood, Hedley Donovan, Rebecca A. Merrilees, and Barbara Wolff. Landscape Gardening. Virginia: Time-Life, 1979.

Dyfyniad MLA

Crockett, James Underwood, et al. Landscape Gardening. Time-Life, 1979.

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