Gaya APA
Agustina, S. (2016).
Politeness and Power Relation in EFL Classroom Interactions .
Surabaya:
Universitas Negeri Surabaya.
Gaya MLA
Agustina, Sheila.
"Politeness and Power Relation in EFL Classroom Interactions".
Surabaya:
Universitas Negeri Surabaya,
2016.
Text.