Cita APA (7a ed.)

Friel, T. W., & Carkhuff, R. R. (1978). The art of developing a career: A helper's guide. Human Resource Development.

Cita Chicago Style (17a ed.)

Friel, Theodore W., y Robert R. Carkhuff. The Art of Developing a Career: A Helper's Guide. Amherst, Massachusetts: Human Resource Development, 1978.

Cita MLA (9a ed.)

Friel, Theodore W., y Robert R. Carkhuff. The Art of Developing a Career: A Helper's Guide. Human Resource Development, 1978.