एपीए उद्धरण

Phạm Thị Quỳnh Như. (2013). Commercial Correspondence.

शिकागो स्टाइल उद्धरण

Phạm Thị Quỳnh Như. Commercial Correspondence. 2013.

एमएलए उद्धरण

Phạm Thị Quỳnh Như. Commercial Correspondence. 2013.