Stanley Feldstein & Aron Wolfe Siegman 
Multichannel Integrations of Nonverbal Behavior [PDF ebook] 

First published in 1985. This book takes a multichannel perspective. The first three chapters are written from a distinctly functional perspective: the function of nonverbal behavior on interpersonal attraction, in the expression of emotions and in the control of conversations. They are followed by two topically organized chapters, namely, the role of nonverbal behavior in interpersonal expectancies and deceptive communications. They, in turn, are followed by a process-oriented discussion of the nature of nonverbal behavior. The book concludes with two contributions concerned with the demography of nonverbal behavior: the role of gender, class, and ethnicity (with the latter viewed from a cultural perspective). In each case, however, the chapter is organized, to the extent possible, from a multichannel perspective.