Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

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

Cita MLA (9th ed.)

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