Gaya APA
WIDODO, Y, T, B.
(2012).
SMART, BRIEF AND CLEAR ENGLISH GRAMMAR
.
SURABAYA:
APOLLO LESTARI.
Gaya MLA
WIDODO, Y., TRIYO, BUDI.
"SMART, BRIEF AND CLEAR ENGLISH GRAMMAR".
SURABAYA:
APOLLO LESTARI,
2012.
Text.