Gaya APA
Cassel, R, D, &, P.
(1984).
Disiplin Tanpa Hukuman
(
4)
.
Munchen:
Enhrenwirth.
Gaya MLA
Cassel, Rudolf, Dreikurs, &, Pearl.
"Disiplin Tanpa Hukuman".
4
Munchen:
Enhrenwirth,
1984.
Text.