Παραπομπή APA

Hurlock, E. B. (1956). Child development (3 rd.). McGraw-Hill.

Παραπομπή Chicago Style

Hurlock, Elizabeth B. Child Development. 3 rd. New York: McGraw-Hill, 1956.

Παραπομπή MLA

Hurlock, Elizabeth B. Child Development. 3 rd. McGraw-Hill, 1956.