Gaya APA
SUMITRO, Djoko. (1995).
English for science and technology .
Jogja:
UGM.
Gaya Chicago
SUMITRO, Djoko.
English for science and technology.
Jogja:
UGM,
1995.
Text.
Gaya MLA
SUMITRO, Djoko.
English for science and technology.
Jogja:
UGM,
1995.
Text.
Gaya Turabian
SUMITRO, Djoko.
English for science and technology.
Jogja:
UGM,
1995.
Print.