Beck, R. C. (1986). Applying psychology: Understanding people (2nd ed.). Prentice-Hall.
Cita Chicago (17th ed.)Beck, Robert Clarence. Applying Psychology: Understanding People. 2nd ed. Englewood Cliffs, N.J: Prentice-Hall, 1986.
Cita MLA (9th ed.)Beck, Robert Clarence. Applying Psychology: Understanding People. 2nd ed. Prentice-Hall, 1986.
Atenció: Aquestes cites poden no estar 100% correctes.