APA (7th ed.) Citation

ScienceDirect (Online service) & Spielberger, C. D. (2004). Encyclopedia of applied psychology. Elsevier Academic Press.

Chicago Style (17th ed.) Citation

ScienceDirect (Online service) and Charles Donald Spielberger. Encyclopedia of Applied Psychology. Oxford ; Boston: Elsevier Academic Press, 2004.

MLA (9th ed.) Citation

ScienceDirect (Online service) and Charles Donald Spielberger. Encyclopedia of Applied Psychology. Elsevier Academic Press, 2004.

Warning: These citations may not always be 100% accurate.