Trudgill, P. (2000). Sociolinguistics: An introduction to language and society. Penguin.
Citazione stile Chigago Style (17a edizione)Trudgill, Peter. Sociolinguistics: An Introduction to Language and Society. London: Penguin, 2000.
Citatione MLA (9a ed.)Trudgill, Peter. Sociolinguistics: An Introduction to Language and Society. Penguin, 2000.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.