Gaya APA
Allsop, J. (1991).
Cassell's student's : English grammar exercises with answers / Jake Allsop (Cet. 1).
Jakarta:
Binarupa Aksara.
Gaya MLA
Allsop, Jake.
"Cassell's student's : English grammar exercises with answers / Jake Allsop".
Cet. 1
Jakarta:
Binarupa Aksara,
1991.
Buku.