Cita APA (7th ed.)
Dyer, W. (1927). Activities of the elementary school principal for the improvement of instruction. Columbia Univ.
Cita Chicago (17th ed.)
Dyer, William. Activities of the Elementary School Principal for the Improvement of Instruction. New York: Columbia Univ, 1927.
Cita MLA (9th ed.)
Dyer, William. Activities of the Elementary School Principal for the Improvement of Instruction. Columbia Univ, 1927.
Atenció: Aquestes cites poden no estar 100% correctes.