Gaya APA
Wardhahaugh, R., Fuller, J, M. (2015).
An Introductions to sociolinguistics (ed.7).
UK:
Distributor/Blackwell Publisher Ltd.
Gaya MLA
Wardhahaugh, Ronald., Fuller, Janet, M..
"An Introductions to sociolinguistics".
ed.7
UK:
Distributor/Blackwell Publisher Ltd,
2015.
e-Book.