Obee B. Bob & Spratt M. Mary. (2010). Mission IELTS 1 Academic: Teacher's Book. Newbury, Express Publishing, 2010.
Čikaški stil citiranja (17. izdanje)Obee B. Bob i Spratt M. Mary. Mission IELTS 1 Academic: Teacher's Book. Newbury, Express Publishing, 2010, 2010.
MLA način citiranja (9. izdanje)Obee B. Bob i Spratt M. Mary. Mission IELTS 1 Academic: Teacher's Book. Newbury, Express Publishing, 2010, 2010.
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