Gaya APA
Amin.A, . et al (2010).
Grammar Builder : A Grammar guidebook for students of english 1 (Buku 1).
USA:
Cambridge University Press.
Gaya MLA
Amin.A, . et al.
"Grammar Builder : A Grammar guidebook for students of english 1".
Buku 1
USA:
Cambridge University Press,
2010.
Text.