Cita APA (7a ed.)

Safari Tech Books Online, Bradshaw, L. A., Gerken, T. C., & Merrall, G. C. (2001). PHP3 and PHP4 Functions Essential Reference. Sams.

Cita Chicago Style (17a ed.)

Safari Tech Books Online, Landon Author Bradshaw, Till Contributor Gerken, y Graeme Contributor Merrall. PHP3 and PHP4 Functions Essential Reference. [Place of publication not identified]: Sams, 2001.

Cita MLA (9a ed.)

Safari Tech Books Online, et al. PHP3 and PHP4 Functions Essential Reference. Sams, 2001.