Cita APA (7a ed.)

Eppley, K. R., Shear, J., & Abrams, A. I. (1989). Differential effects of relaxation techniques on trait anxiety: A meta-analysis. [s.n.].

Cita Chicago Style (17a ed.)

Eppley, Kenneth R., J. Shear, y Allan I. Abrams. Differential Effects of Relaxation Techniques on Trait Anxiety: A Meta-analysis. [S.l.]: [s.n.], 1989.

Cita MLA (9a ed.)

Eppley, Kenneth R., et al. Differential Effects of Relaxation Techniques on Trait Anxiety: A Meta-analysis. [s.n.], 1989.