Cita APA (7a ed.)

Penman, R. (1980). Communication processes and relationships. Acad. Pr.

Cita Chicago Style (17a ed.)

Penman, Robyn. Communication Processes and Relationships. London: Acad. Pr, 1980.

Cita MLA (9a ed.)

Penman, Robyn. Communication Processes and Relationships. Acad. Pr, 1980.