Jones, L., & Leo Jones. (2005). Welcome!: English for the travel and tourism industry: student's book. Cambridge,New York: Cambridge University Press.
Chicago-tyylinen lähdeviittausJones, Leo, ja Leo Jones. Welcome!: English for the Travel and Tourism Industry: Student's Book. Cambridge,New York: Cambridge University Press, 2005.
MLA-viiteJones, Leo, ja Leo Jones. Welcome!: English for the Travel and Tourism Industry: Student's Book. Cambridge,New York: Cambridge University Press, 2005.
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