Dyfyniad APA

Seidman, L. W. (1989). Productivity: The american advantage. New York: Simon and Schuster.

Dyfyniad Arddull Chicago

Seidman, L. William. Productivity: The American Advantage. New York: Simon and Schuster, 1989.

Dyfyniad MLA

Seidman, L. William. Productivity: The American Advantage. New York: Simon and Schuster, 1989.

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