Cita APA (7a ed.)

Robb, H. B., & Warren, R. (1990). Irrational belief tests: New insights, new directions. [s.n.].

Cita Chicago Style (17a ed.)

Robb, Harold B., y Ricks Warren. Irrational Belief Tests: New Insights, New Directions. [S.l.]: [s.n.], 1990.

Cita MLA (9a ed.)

Robb, Harold B., y Ricks Warren. Irrational Belief Tests: New Insights, New Directions. [s.n.], 1990.