APA
Hurlock E. B., . (1980). Developmental psychology and life span approach. Tata McGraw Hill, New Delhi: .
Chicago
Hurlock Elizabeth B, . 1980. Developmental psychology and life span approach. Tata McGraw Hill, New Delhi: .
Harvard
Hurlock E. B., . (1980). Developmental psychology and life span approach. Tata McGraw Hill, New Delhi: .
MLA
Hurlock Elizabeth B, . Developmental psychology and life span approach. Tata McGraw Hill, New Delhi: . 1980.