एपीए उद्धरण

Alvin, L. P. (2006). Free and situational writing for GCE 'N' and 'O' levels: A text type approach. Singapore: Learners publishing.

शिकागो स्टाइल उद्धरण

Alvin, Leong Ping. Free and Situational Writing for GCE 'N' and 'O' Levels: A Text Type Approach. Singapore: Learners publishing, 2006.

एमएलए उद्धरण

Alvin, Leong Ping. Free and Situational Writing for GCE 'N' and 'O' Levels: A Text Type Approach. Singapore: Learners publishing, 2006.