Gaya APA
RYCKMAN, R, M. (1985).
Theories of personality (THIRD EDITION).
Monterey:
BROOKS COLE PUBLISHING COMPANY.
Gaya MLA
RYCKMAN, Richard, M..
"Theories of personality".
THIRD EDITION
Monterey:
BROOKS COLE PUBLISHING COMPANY,
1985.
FAKULTAS PSIKOLOGI.