Bitter, G. (1980). basic for beginning (2nd.). Tata McGraw Hill.
Chicago Style aipamenaBitter, G. Basic for Beginning. 2nd. New Delhi: Tata McGraw Hill, 1980.
MLA aipamenaBitter, G. Basic for Beginning. 2nd. Tata McGraw Hill, 1980.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.