BARRONS. (1999). GRE 12 ED. GALGOTIA.
Chicago Style aipamenaBARRONS. GRE 12 ED. ALLAHABAD: GALGOTIA, 1999.
MLA aipamenaBARRONS. GRE 12 ED. GALGOTIA, 1999.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.
BARRONS. (1999). GRE 12 ED. GALGOTIA.
Chicago Style aipamenaBARRONS. GRE 12 ED. ALLAHABAD: GALGOTIA, 1999.
MLA aipamenaBARRONS. GRE 12 ED. GALGOTIA, 1999.