APA (7th ed.) Zitazioa

Proga, R. (1996). Arithmetic and algebra (4th.ed.). PWS.

Chicago Style (17th ed.) Zitazioa

Proga, Rosanne. Arithmetic and Algebra. 4th.ed. Boston: PWS, 1996.

MLA (9th ed.) Zitazioa

Proga, Rosanne. Arithmetic and Algebra. 4th.ed. PWS, 1996.