Cita APA

Gray, J. S. n. 1., & Gray, J. S. n. 1. (1954). Psychology applied to human affaires (2. edition.). New York, New York: McGraw-Hill.

Citación estilo Chicago

Gray, John Stanley n. 1894, y John Stanley n. 1894 Gray. Psychology Applied to Human Affaires. 2. edition. New York, New York: McGraw-Hill, 1954.

Cita MLA

Gray, John Stanley n. 1894, y John Stanley n. 1894 Gray. Psychology Applied to Human Affaires. 2. edition. New York, New York: McGraw-Hill, 1954.