Citazione Stile APA (7a Edizione)

369916 Hoppock, R. (1967). Occupational information: Where to get it and how to use it in counseling and in teaching. New York : McGraw-Hill.

Citazione stile Chigago Style (17a edizione)

369916 Hoppock, Robert. Occupational Information: Where to Get It and How to Use It in Counseling and in Teaching. New York : McGraw-Hill, 1967.

Citatione MLA (9a ed.)

369916 Hoppock, Robert. Occupational Information: Where to Get It and How to Use It in Counseling and in Teaching. New York : McGraw-Hill, 1967.