Παραπομπή APA

Gysbers, N. C., Heppner, M. J., & Johnston, J. A. (1997). Career counseling: Process, issues, and techniques. Boston: Allyn and Bacon.

Παραπομπή Chicago Style

Gysbers, Norman C., Mary J. Heppner, and Joseph A. Johnston. Career Counseling: Process, Issues, and Techniques. Boston: Allyn and Bacon, 1997.

Παραπομπή MLA

Gysbers, Norman C., Mary J. Heppner, and Joseph A. Johnston. Career Counseling: Process, Issues, and Techniques. Boston: Allyn and Bacon, 1997.

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