Penggayaan APA
Allsop. (1989).
Penguin english test book 3 .
[s.l]:
Gelatik.
Chicago Style
Allsop.
Penguin english test book 3.
[s.l]:
Gelatik,
1989.
Text.
MLA Style
Allsop.
Penguin english test book 3.
[s.l]:
Gelatik,
1989.
Text.
Turabian Style
Allsop.
Penguin english test book 3.
[s.l]:
Gelatik,
1989.
Print.