एपीए उद्धरण

O'Neill, R. (1973). Kernel Lessons Plus: A post-intermediate course : Students' Book. London: Longman.

शिकागो स्टाइल उद्धरण

O'Neill, Robert. Kernel Lessons Plus: A Post-intermediate Course : Students' Book. London: Longman, 1973.

एमएलए उद्धरण

O'Neill, Robert. Kernel Lessons Plus: A Post-intermediate Course : Students' Book. London: Longman, 1973.