Regular Expression Pocket Reference
Tony Stubblebine
sed & awk Pocket Reference
Arnold Robbins
Bash Pocket Reference
C Pocket Reference
Peter Prinz & Ulla Kirch-Prinz
Python Pocket Reference
Mark Lutz
C++ Pocket Reference
Kyle Loudon
Java Pocket Guide
Robert Liguori & Patricia Liguori
Windows PowerShell Pocket Reference
Lee Holmes
SQL Pocket Guide
Jonathan Gennick
C# 8.0 Pocket Reference
Joseph Albahari & Ben Albahari