Gaya APA
SUKIRMAN, . (2009).
Improving students speaking proficiency through contexdtual teaching and learning approach .
:
Universitas Sebelas Maret.
Gaya MLA
SUKIRMAN, .
"Improving students speaking proficiency through contexdtual teaching and learning approach".
:
Universitas Sebelas Maret,
2009.
Skripsi.