Tolbert, E. L. (1980). Counseling for career development. Houghton Mifflin.
Cita Chicago (17th ed.)Tolbert, E. L. Counseling for Career Development. Boston: Houghton Mifflin, 1980.
Cita MLA (9th ed.)Tolbert, E. L. Counseling for Career Development. Houghton Mifflin, 1980.
Atenció: Aquestes cites poden no estar 100% correctes.