APA (7e ed.) Bronvermelding

Herr, E. L. (1988). Career guidance through the life span: Systematic approaches (3rd ed.). Little, Brown and Co..

Chicago (17e ed.) Bronvermelding

Herr, Edwin L. Career Guidance Through the Life Span: Systematic Approaches. 3rd ed. Boston: Little, Brown and Co., 1988.

MLA (9e ed.) Bronvermelding

Herr, Edwin L. Career Guidance Through the Life Span: Systematic Approaches. 3rd ed. Little, Brown and Co., 1988.