Gaya APA
m.pd, D, H, S, M., c.richards, M, H. (1996).
Sociolinguistics and Language Teaching (Cet.1).
New York:
Cambridge University.
Gaya MLA
m.pd, Dra., Hj., Sri, Mawani.., c.richards, Michael, H,long.jack.
"Sociolinguistics and Language Teaching".
Cet.1
New York:
Cambridge University,
1996.
Text.