APA (7th ed.) Citation

Krol, K. (2015). WordPress 4.x complete: Get your website up and running and beautify it with WordPress. Packt Publishing.

Chicago Style (17th ed.) Citation

Krol, Karol. WordPress 4.x Complete: Get Your Website Up and Running and Beautify It with WordPress. Birmingham [England]: Packt Publishing, 2015.

MLA (9th ed.) Citation

Krol, Karol. WordPress 4.x Complete: Get Your Website Up and Running and Beautify It with WordPress. Packt Publishing, 2015.

Warning: These citations may not always be 100% accurate.