Garton-Sprenger, J. (1990). Flying colours 1: Students' Book. Heinemann.
Čikaški stil citiranja (17. izdanje)Garton-Sprenger, Judy. Flying Colours 1: Students' Book. Oxford: Heinemann, 1990.
MLA način citiranja (9. izdanje)Garton-Sprenger, Judy. Flying Colours 1: Students' Book. Heinemann, 1990.
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