Παραπομπή APA

Spector, P. E. (1992). Summated rating scale construction: An introduction. Sage Publications.

Παραπομπή Chicago Style

Spector, Paul E. Summated Rating Scale Construction: An Introduction. Newbury Park, Calif.: Sage Publications, 1992.

Παραπομπή MLA

Spector, Paul E. Summated Rating Scale Construction: An Introduction. Sage Publications, 1992.