Gaya APA
Riyanto, S. (2010).
Essentials of English Grammar for Fluent English : Book Three .
Yogyakarta:
Pustaka Pelajar.
Gaya MLA
Riyanto, Slamet.
"Essentials of English Grammar for Fluent English : Book Three".
Yogyakarta:
Pustaka Pelajar,
2010.
Buku Tex.