Gaya APA
Riyanto, S. et al
(2008).
A complete course to the toeic test
.
Gorontalo:
Lanskap Zaman,dan Pustaka Pelajar.
Gaya MLA
Riyanto, Slamet. et al.
"A complete course to the toeic test".
Gorontalo:
Lanskap Zaman,dan Pustaka Pelajar,
2008.
Text.