Gaya APA
An A-Z for en grammar and usage / Geoffrey Leech, Benita Cruickshank, Roz Ivanic. (2001).
:
Essex, Pearson Education Limited.
Gaya MLA
An A-Z for en grammar and usage / Geoffrey Leech, Benita Cruickshank, Roz Ivanic.
.
:
Essex, Pearson Education Limited,
2001.
Text.