Gaya APA
Riyanto, S.
(2009).
HOW TO SAY IT IN ENGLISH
.
Yogyakarta:
Pustaka Pelajar.
Gaya MLA
Riyanto, Slamet.
"HOW TO SAY IT IN ENGLISH".
Yogyakarta:
Pustaka Pelajar,
2009.
Buku Tex.