Cita APA (7a ed.)

Key, M. R. (2011). The relationship of verbal and nonverbal communication. De Gruyter Mouton.

Cita Chicago Style (17a ed.)

Key, Mary Ritchie. The Relationship of Verbal and Nonverbal Communication. Berlin ; New York: De Gruyter Mouton, 2011.

Cita MLA (8a ed.)

Key, Mary Ritchie. The Relationship of Verbal and Nonverbal Communication. De Gruyter Mouton, 2011.