Dyfyniad APA

Bittel, L. R. (1976). Improving supervisory performance. McGraw-Hill Company.

Dyfyniad Arddull Chicago

Bittel, Lester R. Improving Supervisory Performance. New York: McGraw-Hill Company, 1976.

Dyfyniad MLA

Bittel, Lester R. Improving Supervisory Performance. McGraw-Hill Company, 1976.

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