Dyfyniad APA

Leopold, A. C. (1964). Plant growth and development. New York: McGraw-Hill.

Dyfyniad Arddull Chicago

Leopold, A. Carl. Plant Growth and Development. New York: McGraw-Hill, 1964.

Dyfyniad MLA

Leopold, A. Carl. Plant Growth and Development. New York: McGraw-Hill, 1964.

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