Thewlis, S. (1997). Grammar dimensions. Pacific Grove: Heinle & Heinle Publishers.
Chicago Style aipamenaThewlis, Stephen. Grammar Dimensions. Pacific Grove: Heinle & Heinle Publishers, 1997.
MLA aipamenaThewlis, Stephen. Grammar Dimensions. Pacific Grove: Heinle & Heinle Publishers, 1997.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.