Frendo E. Evan & Bonamy D. David. (2016). English for Oil and Gas. Level 2: Course book. Harlow, Pearson Education Limited, 2016.
Čikaški stil citiranja (17. izdanje)Frendo E. Evan i Bonamy D. David. English for Oil and Gas. Level 2: Course Book. Harlow, Pearson Education Limited, 2016, 2016.
MLA način citiranja (9. izdanje)Frendo E. Evan i Bonamy D. David. English for Oil and Gas. Level 2: Course Book. Harlow, Pearson Education Limited, 2016, 2016.
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