Stern, H. (1992). Issues and options in language teaching. Oxford University Press.
Citazione stile Chigago Style (17a edizione)Stern, H.N. Issues and Options in Language Teaching. Oxford: Oxford University Press, 1992.
Citatione MLA (9a ed.)Stern, H.N. Issues and Options in Language Teaching. Oxford University Press, 1992.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.