Gaya APA

Hoppock, R. (1976). Occupational information : where to get it and how to use it in career education, career counseling and career development (4th ed). New York: McGraw-Hill.

Gaya MLA

Hoppock, Robert. "Occupational information : where to get it and how to use it in career education, career counseling and career development". 4th ed New York: McGraw-Hill, 1976. Text.