APA (7th ed.) Zitazioa

(1989). Basic skills: Preparation for the GED, and English as a second language.

Chicago Style (17th ed.) Zitazioa

Basic Skills: Preparation for the GED, and English as a Second Language. 1989.

MLA (9th ed.) Zitazioa

Basic Skills: Preparation for the GED, and English as a Second Language. 1989.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.