Cita APA (7th ed.)

Pollock, P. H., & Pollock, P. H. (2009). An SPSS companion to political anlysis (3rd ed.). CQ Press.

Cita Chicago (17th ed.)

Pollock, Philip H., i Philip H. Pollock. An SPSS Companion to Political Anlysis. 3rd ed. Washington: CQ Press, 2009.

Cita MLA (8th ed.)

Pollock, Philip H., i Philip H. Pollock. An SPSS Companion to Political Anlysis. 3rd ed. CQ Press, 2009.