Gaya APA
Wittig, Arno F. (1981).
Theory and Problems of Psychology of Learning .
USA:
McGraw-Hill.
Gaya Chicago
Wittig, Arno F.
Theory and Problems of Psychology of Learning.
USA:
McGraw-Hill,
1981.
Text.
Gaya MLA
Wittig, Arno F.
Theory and Problems of Psychology of Learning.
USA:
McGraw-Hill,
1981.
Text.
Gaya Turabian
Wittig, Arno F.
Theory and Problems of Psychology of Learning.
USA:
McGraw-Hill,
1981.
Print.