APA

Hurlock E. B., . (1968). Developmental psychology. New York: McGraw-Hill.

Chicago

Hurlock Elizabeth Bergner, . 1968. Developmental psychology. New York: McGraw-Hill.

Harvard

Hurlock E. B., . (1968). Developmental psychology. New York: McGraw-Hill.

MLA

Hurlock Elizabeth Bergner, . Developmental psychology. New York: McGraw-Hill. 1968.