Marsden B. Bob, Hopkins A. Andy, & Potter J. Jocelyn. (1999). Look ahead 1and 2: Classroom course. Teacher's guide video workbook. Harlow, Longman, 1999.
Čikaški stil citiranja (17. izdanje)Marsden B. Bob, Hopkins A. Andy, i Potter J. Jocelyn. Look Ahead 1and 2: Classroom Course. Teacher's Guide Video Workbook. Harlow, Longman, 1999, 1999.
MLA način citiranja (9. izdanje)Marsden B. Bob, et al. Look Ahead 1and 2: Classroom Course. Teacher's Guide Video Workbook. Harlow, Longman, 1999, 1999.
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