APA
Ingersoll G.M, . (1989). Adolescents 2nd ed. Prentice Hall, New Jersey: .
Chicago
Ingersoll G.M, . 1989. Adolescents 2nd ed. Prentice Hall, New Jersey: .
Harvard
Ingersoll G.M, . (1989). Adolescents 2nd ed. Prentice Hall, New Jersey: .
MLA
Ingersoll G.M, . Adolescents 2nd ed. Prentice Hall, New Jersey: . 1989.