APA Style
Langan, John Langan, John. (2004).
College writing skills .
New York:
Mcgraw hill.
Chicago Style
Langan, John Langan, John.
College writing skills.
New York:
Mcgraw hill,
2004.
Buku.
MLA Style
Langan, John Langan, John.
College writing skills.
New York:
Mcgraw hill,
2004.
Buku.
Turabian Style
Langan, John Langan, John.
College writing skills.
New York:
Mcgraw hill,
2004.
Buku.