APA (7th ed.) Citation

Spector, P. E. (1994). Research designs (16. [Dr.].). Sage Publ.

Chicago Style (17th ed.) Citation

Spector, Paul E. Research Designs. 16. [Dr.]. Newbury Park [u.a.]: Sage Publ, 1994.

MLA (9th ed.) Citation

Spector, Paul E. Research Designs. 16. [Dr.]. Sage Publ, 1994.