APA
Hurlock E. B., . (1972). Child development, 5th ed. New Delhi: McGraw-Hill.
Chicago
Hurlock Elizabeth B, . 1972. Child development, 5th ed. New Delhi: McGraw-Hill.
Harvard
Hurlock E. B., . (1972). Child development, 5th ed. New Delhi: McGraw-Hill.
MLA
Hurlock Elizabeth B, . Child development, 5th ed. New Delhi: McGraw-Hill. 1972.