Cita APA (7a ed.)

Ryans, D. G. (1970). Characteristics of teachers: Their description, comparison, and appraisal : a research study. American Council on Education.

Cita Chicago Style (17a ed.)

Ryans, David G. Characteristics of Teachers: Their Description, Comparison, and Appraisal : A Research Study. Washington: American Council on Education, 1970.

Cita MLA (9a ed.)

Ryans, David G. Characteristics of Teachers: Their Description, Comparison, and Appraisal : A Research Study. American Council on Education, 1970.