Hartley, B., & Viney, P. (1978). Streamline english: Departures : an intensive English course for beginners : student's edition (1st ed., 26th imp.). Oxford University Press.
Citazione stile Chigago Style (17a edizione)Hartley, B., e Peter Viney. Streamline English: Departures : An Intensive English Course for Beginners : Student's Edition. 1st ed., 26th imp. Oxford: Oxford University Press, 1978.
Citatione MLA (9a ed.)Hartley, B., e Peter Viney. Streamline English: Departures : An Intensive English Course for Beginners : Student's Edition. 1st ed., 26th imp. Oxford University Press, 1978.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.