Παραπομπή APA
Summerfield, G., & Tunnicliffe, S. (1971). English in practice: Secondary English departments at work. Cambridge [Eng.]: Cambridge University Press.
Παραπομπή Chicago StyleSummerfield, Geoffrey., and Stephen Tunnicliffe. English in Practice: Secondary English Departments At Work. Cambridge [Eng.]: Cambridge University Press, 1971.
Παραπομπή MLASummerfield, Geoffrey., and Stephen Tunnicliffe. English in Practice: Secondary English Departments At Work. Cambridge [Eng.]: Cambridge University Press, 1971.
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