APA (7e ed.) Bronvermelding

Drummond, R. J., & Ryan, C. W. (1995). Career counseling: A developmental approach. Merrill, an imprint of Prentice Hall.

Chicago (17e ed.) Bronvermelding

Drummond, Robert J., en Charles W. Ryan. Career Counseling: A Developmental Approach. Englewood Cliffs, N.J: Merrill, an imprint of Prentice Hall, 1995.

MLA (9e ed.) Bronvermelding

Drummond, Robert J., en Charles W. Ryan. Career Counseling: A Developmental Approach. Merrill, an imprint of Prentice Hall, 1995.