Viney, T., Cawood, G., & Duckworth, M. (1985). Streamline English: Direstions. Hong Kong: Oxford University.
Chicago Style aipamenaViney, Teter, Graham Cawood, và Michael Duckworth. Streamline English: Direstions. Hong Kong: Oxford University, 1985.
MLA aipamenaViney, Teter, Graham Cawood, và Michael Duckworth. Streamline English: Direstions. Hong Kong: Oxford University, 1985.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.