एपीए उद्धरण

Dellar, H., & Walkley, A. (2018). Outcomes: Elementary student's book. Vietnam: National Geographic Leanrning; Cengage Learning Vietnam Company Limited.

शिकागो स्टाइल उद्धरण

Dellar, Hugh, और Andrew Walkley. Outcomes: Elementary Student's Book. Vietnam: National Geographic Leanrning; Cengage Learning Vietnam Company Limited, 2018.

एमएलए उद्धरण

Dellar, Hugh, और Andrew Walkley. Outcomes: Elementary Student's Book. Vietnam: National Geographic Leanrning; Cengage Learning Vietnam Company Limited, 2018.