Google Java Style Guide

• http://www.hawstein.com/posts/google-java-style.html
• http://google.github.io/styleguide/javaguide.html

Google C++ Style Guide

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

Google Python Style Guide

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