Winthrop Publishers & Shopen, T. (1979). Languages and their status. Winthrop Publishers.
Citazione stile Chigago Style (17a edizione)Winthrop Publishers e Timothy Shopen. Languages and Their Status. Cambridge, Mass.: Winthrop Publishers, 1979.
Citatione MLA (9a ed.)Winthrop Publishers e Timothy Shopen. Languages and Their Status. Winthrop Publishers, 1979.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.