Lua APA (7ú heag.)
ebrary, Inc, & Broughton, G. (1978). Teaching English as a foreign language. Routledge & K. Paul.
Lua i Stíl Chicago (17ú heag.)
ebrary, Inc, agus Geoffrey Broughton. Teaching English as a Foreign Language. London ; Boston: Routledge & K. Paul, 1978.
Lua MLA (9ú heag.)
ebrary, Inc, agus Geoffrey Broughton. Teaching English as a Foreign Language. Routledge & K. Paul, 1978.
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