APA (7th ed.) Zitazioa
Monterrubio, M. (1998). First steps: Teacher's book levels 1 and 2 (3a. ed.). Macmillan.
Chicago Style (17th ed.) Zitazioa
Monterrubio, Myriam. First Steps: Teacher's Book Levels 1 and 2. 3a. ed. Oxford: Macmillan, 1998.
MLA (9th ed.) Zitazioa
Monterrubio, Myriam. First Steps: Teacher's Book Levels 1 and 2. 3a. ed. Macmillan, 1998.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.