Cita APA (7th ed.)

Hurlock, E. B. (1968). Developmental psychology (Third edition.). McGraw-Hill Book Company.

Cita Chicago (17th ed.)

Hurlock, Elizabeth B. Developmental Psychology. Third edition. New York: McGraw-Hill Book Company, 1968.

Cita MLA (9th ed.)

Hurlock, Elizabeth B. Developmental Psychology. Third edition. McGraw-Hill Book Company, 1968.