Google Java Style Guide

• http://google.github.io/styleguide/javaguide.html

Google C++ Style Guide

• http://zh-google-styleguide.readthedocs.io/en/latest/google-cpp-styleguide/contents/

Google Python Style Guide

• http://zh-google-styleguide.readthedocs.io/en/latest/google-python-styleguide/contents/