Bruce, K. (1992). Telephoning (Col. ed.). Longman.
Chicago Style aipamenaBruce, Kay. Telephoning. Col. ed. London: Longman, 1992.
MLA aipamenaBruce, Kay. Telephoning. Col. ed. Longman, 1992.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.
Bruce, K. (1992). Telephoning (Col. ed.). Longman.
Chicago Style aipamenaBruce, Kay. Telephoning. Col. ed. London: Longman, 1992.
MLA aipamenaBruce, Kay. Telephoning. Col. ed. Longman, 1992.