एपीए उद्धरण

Dubicka, I., & O'Keeffe, M. (2015). Market Leader: Advanced: Business English Course Book. PearsonLongman.

शिकागो स्टाइल उद्धरण

Dubicka, Iwonna, और Margaret O'Keeffe. Market Leader: Advanced: Business English Course Book. PearsonLongman, 2015.

एमएलए उद्धरण

Dubicka, Iwonna, और Margaret O'Keeffe. Market Leader: Advanced: Business English Course Book. PearsonLongman, 2015.