Coulmas Florian. (2005). Sociolinguistics: The Study of Speaker’s Choices. Cambridge: Cambridge University Press.

Mozafari, S. (2012). Coulmas Florian. (2005). Sociolinguistics: The Study of Speaker’s Choices. Cambridge: Cambridge University Press. Language and Linguistics, 8(15), 145–154.

Mozafari, S. "Coulmas Florian. (2005). Sociolinguistics: The Study of Speaker’s Choices. Cambridge: Cambridge University Press.", Language and Linguistics, 8, 15, 2012, 145–154.

Mozafari, S. (2012). 'Coulmas Florian. (2005). Sociolinguistics: The Study of Speaker’s Choices. Cambridge: Cambridge University Press.', Language and Linguistics, 8(15), pp. 145–154.

Mozafari, S., "Coulmas Florian. (2005). Sociolinguistics: The Study of Speaker’s Choices. Cambridge: Cambridge University Press.." Language and Linguistics, 8 15 (2012): 145–154,

Mozafari S. Coulmas Florian. (2005). Sociolinguistics: The Study of Speaker’s Choices. Cambridge: Cambridge University Press. Language and Linguistics. 2012;8(15):145–154 (In Persian).