HiveMQ, MQTT 5 Essentials: A Technical Deep Dive into New MQTT 5 Features. Landshut, Germany: HiveMQ, 2021.
G. C. Hillar, Hands-On MQTT Programming with Python. Birmingham–Mumbai: Packt Publishing, 2018. ISBN: 978-1-78913-854-2.
S. Ludin and J. Garza, Learning HTTP/2: A Practical Guide for Beginners. Sebastopol, CA,
USA: O’Reilly Media, 2017. ISBN: 978-1-491-96244-2.
S. Sharma, Mastering IoT for Industrial Environments: Unlock the IoT Landscape for Industrial Environments with Industry 4.0, Covering Architecture, Protocols like MQTT, and Advancements with ESP-IDF. Delhi, India: Orange Education Pvt Ltd, 2024. ISBN: 978-81-97081-97-2.