Cita APA (7th ed.)
Engelkes, J. R. (1982). Introduction to counselling. Houghton Mifflin.
Cita Chicago (17th ed.)
Engelkes, James R. Introduction to Counselling. Boston: Houghton Mifflin, 1982.
Cita MLA (9th ed.)
Engelkes, James R. Introduction to Counselling. Houghton Mifflin, 1982.
Atenció: Aquestes cites poden no estar 100% correctes.