APA aipamena

Jones, L., & Leo jones. (1986). Progress to Proficiency: Student is book. Cambridge University Press: Cambridge.

Chicago Style aipamena

Jones, Leo, và Leo jones. Progress to Proficiency: Student Is Book. Cambridge University Press: Cambridge, 1986.

MLA aipamena

Jones, Leo, và Leo jones. Progress to Proficiency: Student Is Book. Cambridge University Press: Cambridge, 1986.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.