Gaya APA
Hartley, B., Viney, P. (1978).
Streamline English: Departures Part B: Units 41-80 .
Oxford:
Oxford University Press.
Gaya MLA
Hartley, Bernard., Viney, Peter.
"Streamline English: Departures Part B: Units 41-80".
Oxford:
Oxford University Press,
1978.
Text.