Gaya APA
slamet, R, ,.
(2011).
The Texbook Of english grammar
(
cet 1)
.
Yogyakarta:
pustaka widyantara.
Gaya MLA
slamet, Riyanto, ,.
"The Texbook Of english grammar".
cet 1
Yogyakarta:
pustaka widyantara,
2011.
Text.