Gaya APA
Lestari, P. (2013).
Code Switching Used by English Teacher in Teaching and Learning Class .
Tulungagung:
STAIN Tulungagung.
Gaya MLA
Lestari, Puji.
"Code Switching Used by English Teacher in Teaching and Learning Class".
Tulungagung:
STAIN Tulungagung,
2013.
Skripsi.