Gaya APA

WARDHAUGH, R., FULLER, J, M. (2015). AN INTRODUCTION TO SOCIOLINGUISTICS (ED.7). SINGAPORE: WILEY BLACKWELL.

Gaya MLA

WARDHAUGH, RONALD., FULLER, JANET, M.. "AN INTRODUCTION TO SOCIOLINGUISTICS". ED.7 SINGAPORE: WILEY BLACKWELL, 2015. Prodi S1 Sastra Inggris.