APA-viite

Nagpal, D. (1999). Questions and answers in computer science 'O'Level. Wheeler Publishing.

Chicago-tyylinen lähdeviittaus

Nagpal, D.P. Questions and Answers in Computer Science 'O'Level. New Delhi: Wheeler Publishing, 1999.

MLA-viite

Nagpal, D.P. Questions and Answers in Computer Science 'O'Level. Wheeler Publishing, 1999.