Gaya APA
Longman dictionary of contemporary english. (2006).
England:
Pearson Educational Limited.
Gaya Chicago
Longman dictionary of contemporary english.
.
England:
Pearson Educational Limited,
2006.
Buku.
Gaya MLA
Longman dictionary of contemporary english.
.
England:
Pearson Educational Limited,
2006.
Buku.
Gaya Turabian
Longman dictionary of contemporary english.
England:
Pearson Educational Limited,
2006.
Buku.