Gaya APA
Leo, S.
(2013).
A Chailenging Book to Practice Teaching in English
(
-)
.
Jogjakarta:
Yogyakarta; Andi,.
Gaya MLA
Leo, Sutanto.
"A Chailenging Book to Practice Teaching in English".
-
Jogjakarta:
Yogyakarta; Andi,,
2013.
Fakultas keguruan.