When searching for articles and books on topics of interpersonal communication, consider:
Context - of communication: work meeting, hospital, classroom, etc.
Relationship - of the people communicating: employer/employee, parent/child, siblings, etc.
Form or Medium - Verbal, nonverbal, written, etc.
Purpose or Goal - of the communication: persuasion, informing, etc.
Characteristics - of the communicators: gender, age, culture, etc.
The words you use to describe these can help you find information relevant to your topic.