Wessels, D. (2004). Squid: The definitive guide (First edition.). O'Reilly & Associates, Inc.
Cita Chicago Style (17a ed.)Wessels, Duane. Squid: The Definitive Guide. First edition. Sebastopol, Californai: O'Reilly & Associates, Inc, 2004.
Cita MLA (9a ed.)Wessels, Duane. Squid: The Definitive Guide. First edition. O'Reilly & Associates, Inc, 2004.
Precaución: Estas citas no son 100% exactas.