Levin, Lennart
Comparative studies in foreign-language teaching
Almqvist och Wiksell, 1972
 Buku Teks SO
Hadley, Alice Omaggio
Teaching language in context
Heinle Cengage Learning, 2001
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Teaching modern languages
edited by Ann Swarbrick
Routledge, 1994
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Teaching modern languages
edited by Ann Swarbrick
Routledge, 1994
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Bovair, Keith
Modern languages for all
Kogan Page, 1992
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