APA (7th ed.) Citation

Spector, P. E. (1985). Research designs (5. print.). Sage.

Chicago Style (17th ed.) Citation

Spector, Paul E. Research Designs. 5. print. Beverly Hills [u.a.]: Sage, 1985.

MLA (9th ed.) Citation

Spector, Paul E. Research Designs. 5. print. Sage, 1985.