Cita APA (7a ed.)

Bumgardner, J. (2006). Building tag clouds in Perl and PHP. O'Reilly.

Cita Chicago Style (17a ed.)

Bumgardner, Jim. Building Tag Clouds in Perl and PHP. [Calif.]: O'Reilly, 2006.

Cita MLA (8a ed.)

Bumgardner, Jim. Building Tag Clouds in Perl and PHP. O'Reilly, 2006.