STEVENSON B. (1992). HOW TO PASS EXAMS. SUDHA PUBLICATIONS.
Chicago Style aipamenaSTEVENSON B. HOW TO PASS EXAMS. NEW DELHI: SUDHA PUBLICATIONS, 1992.
MLA aipamenaSTEVENSON B. HOW TO PASS EXAMS. SUDHA PUBLICATIONS, 1992.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.