Gaya APA

Hoppock, R. (2001). Occupational Information: where to get it and how to use it in counseling and in teaching (Trawas) . New York: McGraw-Hill Book Company.

Gaya MLA

Hoppock, Robert. "Occupational Information: where to get it and how to use it in counseling and in teaching (Trawas)". New York: McGraw-Hill Book Company, 2001. Text.