Gaya APA
Alexander, L.
(2012).
First Things First Students Book
(
ed.1.cet 33)
.
Yogyakarta:
Kanisius Jogjakarta.
Gaya MLA
Alexander, L.G..
"First Things First Students Book".
ed.1.cet 33
Yogyakarta:
Kanisius Jogjakarta,
2012.
.