Ayres, F., & Ayres, F. M. (2002). Trignometry. Mcgraw Hill.
Chicago Style aipamenaAyres, F., and F.; Moyer Ayres. Trignometry. New Delhi: Mcgraw Hill, 2002.
MLA aipamenaAyres, F., and F.; Moyer Ayres. Trignometry. Mcgraw Hill, 2002.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.