APA Style
Yates, Christopher St j. (1989).
Economics : english for academic purposes series .
London:
Students' book.
Chicago Style
Yates, Christopher St j.
Economics : english for academic purposes series.
London:
Students' book,
1989.
Buku Teks.
MLA Style
Yates, Christopher St j.
Economics : english for academic purposes series.
London:
Students' book,
1989.
Buku Teks.
Turabian Style
Yates, Christopher St j.
Economics : english for academic purposes series.
London:
Students' book,
1989.
Buku Teks.