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.
Look for books about the individual, or about the person's time period, place, field, etc.