Cita APA (7a ed.)

Dyer, W. P. (1927). Activities of the elementary school principal for the improvement of instruction. Columbia University.

Cita Chicago Style (17a ed.)

Dyer, William Penn. Activities of the Elementary School Principal for the Improvement of Instruction. New York: Columbia University, 1927.

Cita MLA (9a ed.)

Dyer, William Penn. Activities of the Elementary School Principal for the Improvement of Instruction. Columbia University, 1927.