APA Style
Widdowson, H.G, Allen, J.P.B. (1978).
English In Social Studies .
Malang:
PT Remaja Rosdakarya.
Chicago Style
Widdowson, H.G, Allen, J.P.B.
English In Social Studies.
Malang:
PT Remaja Rosdakarya,
1978.
Text.
MLA Style
Widdowson, H.G, Allen, J.P.B.
English In Social Studies.
Malang:
PT Remaja Rosdakarya,
1978.
Text.
Turabian Style
Widdowson, H.G, Allen, J.P.B.
English In Social Studies.
Malang:
PT Remaja Rosdakarya,
1978.
Print.