Gaya APA
Allen, J. P. B., Widdowson, H. G.. (1979).
English in physical science .
Oxford:
Oxford University Press.
Gaya Chicago
Allen, J. P. B., Widdowson, H. G..
English in physical science.
Oxford:
Oxford University Press,
1979.
Text.
Gaya MLA
Allen, J. P. B., Widdowson, H. G..
English in physical science.
Oxford:
Oxford University Press,
1979.
Text.
Gaya Turabian
Allen, J. P. B., Widdowson, H. G..
English in physical science.
Oxford:
Oxford University Press,
1979.
Print.