एपीए उद्धरण

Dummett, P., Hughes, J., & Stephenson, H. Life: Pre- intermediate student's book with online workbook. Singapore.

शिकागो स्टाइल उद्धरण

Dummett, Paul, John Hughes, और Helen Stephenson. Life: Pre- Intermediate Student's Book With Online Workbook. Singapore.

एमएलए उद्धरण

Dummett, Paul, John Hughes, और Helen Stephenson. Life: Pre- Intermediate Student's Book With Online Workbook. Singapore.