Gaya APA
Longman Student Grammar of Spoken and Written English. (2002).
England:
Pearson Educated Limited.
Gaya Chicago
Longman Student Grammar of Spoken and Written English.
Cet.4.
England:
Pearson Educated Limited,
2002.
.
Gaya MLA
Longman Student Grammar of Spoken and Written English.
Cet.4.
England:
Pearson Educated Limited,
2002.
.
Gaya Turabian
Longman Student Grammar of Spoken and Written English.
England:
Pearson Educated Limited,
2002.
.