Gaya APA
Basic english for science. (1996).
tempaterbit:
penerbit.
Gaya Chicago
Basic english for science.
Edisi.
tempaterbit:
penerbit,
1996.
Text.
Gaya MLA
Basic english for science.
Edisi.
tempaterbit:
penerbit,
1996.
Text.
Gaya Turabian
Basic english for science.
tempaterbit:
penerbit,
1996.
Print.