Cita APA (7a ed.)

Hollingworth, H. L. (1933). Educational psychology. D. Appleton-Century Company.

Cita Chicago Style (17a ed.)

Hollingworth, Harry L. Educational Psychology. New York ; London: D. Appleton-Century Company, 1933.

Cita MLA (9a ed.)

Hollingworth, Harry L. Educational Psychology. D. Appleton-Century Company, 1933.