Gaya APA
sukarni, E, I.
(2007).
Happy wigh English 3 : English Textbook for Elementary School
.
Jakarta:
Ganeca Exact.
Gaya MLA
sukarni, Emalia, I..
"Happy wigh English 3 : English Textbook for Elementary School".
Jakarta:
Ganeca Exact,
2007.
Text.