Citazione Stile APA (7a Edizione)
Viney, P., Duckworth, M., & Cawood, G. (1989). Streamline English: Directions. An Intensive English course for upper intermediate students (4.impression.). Oxford University Press.
Citazione stile Chigago Style (17a edizione)
Viney, Peter, Michael Duckworth, e Graham Cawood. Streamline English: Directions. An Intensive English Course for Upper Intermediate Students. 4.impression. Oxford: Oxford University Press, 1989.
Citatione MLA (9a ed.)
Viney, Peter, et al. Streamline English: Directions. An Intensive English Course for Upper Intermediate Students. 4.impression. Oxford University Press, 1989.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.