Wordpress Development

Wrox

Professional WordPress: Design and Development  

Wrox

Professional WordPress Plugin Development        

Packt Publishing

WordPress Plugin Development Cookbook - Third Edition: Explore the complete set of tools to craft powerful plugins that extend the world's most popular CMS

php[architect]

WordPress Development in Depth                  

Packt Publishing

WordPress Complete - Sixth Edition: A comprehensive guide to WordPress development from scratch

Apress

Pro WordPress Theme Development                  

The Simplified Book And Guide on WordPress Design And Development For Pros and Beginners: Unlock the Secrets to Building and Customizing Professional Websites with Ease (English Edition)

Basic WordPress Development (English Edition)    

WORDPRESS DEVELOPMENT GUIDE: Build and Manage Websites with WordPress (English Edition)

BookRix

Master of WordPress Development (English Edition)