APA (7th ed.) Citation

Barr, A. S., Burton, W. H., & Brueckner, L. J. (1947). Supervision: Democratic leadership in the improvement of learning (2. ed.). Appleton-Century.

Chicago Style (17th ed.) Citation

Barr, Avril S., William H. Burton, and Leo J. Brueckner. Supervision: Democratic Leadership in the Improvement of Learning. 2. ed. New York: Appleton-Century, 1947.

MLA (9th ed.) Citation

Barr, Avril S., et al. Supervision: Democratic Leadership in the Improvement of Learning. 2. ed. Appleton-Century, 1947.