This document provides an annotated bibliography on four communication theories: Social Penetration Theory, Social Judgment Theory, Agenda Setting Theory, and Communication Accommodation Theory. It summarizes three scholarly articles on Social Penetration Theory and how it has been taught or studied. The articles look at using movies or anonymous self-disclosure between classmates to help students understand the theory through relating it to their own experiences. The last article discusses how culture can influence self-disclosure and the progression of relationships.