Gaya APA
powel, M., frerichs, A, H.
(1971).
readings in adolescent psychology
.
Turusan-salatiga:
burgess company.
Gaya MLA
powel, Marvin., frerichs, Allen, H.
"readings in adolescent psychology".
Turusan-salatiga:
burgess company,
1971.
Text.