Learn MongoDB 4.x : a guide to understanding MongoDB development and administration for NoSQL develo
Bierer, Doug, author.
Birmingham : Packt Publishing, 2020.

Learning Doctrine : object relational mapping (ORM) and database abstraction for PHP
Bierer, Doug, speaker.
[Place of publication not identified] : O'Reilly, [2015]

Learning MongoDB
Bierer, Doug.
[Place of publication not identified] : InfiniteSkills, 2014.

Learning PHP and MySQL
Bierer, Doug.
[Place of publication not identified] : InfiniteSkills, 2012.

Learning PHP security
Bierer, Doug.
[Place of publication not identified] : InfiniteSkills, 2013.

MongoDB 4 quick start guide : learn the skills you need to work with the world's most popular NoSQL
Bierer, Doug, author.
Birmingham, UK : Packt Publishing Ltd., 2018.

PHP 7 programming cookbook : over 80 recipes that will take your PHP 7 web development skills to the
Bierer, Doug, author.
Birmingham, UK : Packt Publishing, 2016.

PHP 7 : real world application development : use new features of PHP 7 to solve practical, real-worl
Bierer, Doug, author.
Birmingham, UK : Packt Publishing, [2016]

PHP 8 programming tips, tricks and best practices : a practical guide offering insights into the new
Bierer, Doug, author.
Birmingham : Packt Publishing, 2021.