Cita APA (7a ed.)

Spielberger, C. D. (2004). Encyclopedia of applied psychology. Elsevier Academic Press.

Cita Chicago Style (17a ed.)

Spielberger, Charles Donald. Encyclopedia of Applied Psychology. Amsterdam [etc.]: Elsevier Academic Press, 2004.

Cita MLA (9a ed.)

Spielberger, Charles Donald. Encyclopedia of Applied Psychology. Elsevier Academic Press, 2004.