Gaya APA
Riyanto, S.
(2003).
The easy Way To Master English In A Few Days
.
Yogyakarta:
Pustaka Pelajar.
Gaya MLA
Riyanto, Slamet.
"The easy Way To Master English In A Few Days".
Yogyakarta:
Pustaka Pelajar,
2003.
Text.