एपीए उद्धरण

Vernon, P. E. (1971). Certificate of secondary education: Introduction to objective type examination.

शिकागो स्टाइल उद्धरण

Vernon, Philip E. Certificate of Secondary Education: Introduction to Objective Type Examination. 1971.

एमएलए उद्धरण

Vernon, Philip E. Certificate of Secondary Education: Introduction to Objective Type Examination. 1971.