APA-viite

Wardhaugh ,Ronald. (1998). An intoduction to sociolinguistics. Black well.

Chicago-tyylinen lähdeviittaus

Wardhaugh ,Ronald. An Intoduction to Sociolinguistics. Oxford: Black well, 1998.

MLA-viite

Wardhaugh ,Ronald. An Intoduction to Sociolinguistics. Black well, 1998.