APA (7th ed.) Zitazioa
Butler, D. (2015). Developing international EFL/ESL scholarly writers. De Gruyter Mouton.
Chicago Style (17th ed.) Zitazioa
Butler, Donna. Developing International EFL/ESL Scholarly Writers. Boston: De Gruyter Mouton, 2015.
MLA (9th ed.) Zitazioa
Butler, Donna. Developing International EFL/ESL Scholarly Writers. De Gruyter Mouton, 2015.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.