APA
Hurlock E. B., . (1973). Adolescent development .-Fourth edition .-0-07-031457-8. Mcgraw-hill kogakusha Ltd., Tokyo: .
Chicago
Hurlock Elizabeth B, . 1973. Adolescent development .-Fourth edition .-0-07-031457-8. Mcgraw-hill kogakusha Ltd., Tokyo: .
Harvard
Hurlock E. B., . (1973). Adolescent development .-Fourth edition .-0-07-031457-8. Mcgraw-hill kogakusha Ltd., Tokyo: .
MLA
Hurlock Elizabeth B, . Adolescent development .-Fourth edition .-0-07-031457-8. Mcgraw-hill kogakusha Ltd., Tokyo: . 1973.