APA
Markel N. N., Markel N., . (2009). Five vital signs of conversation : address, self-disclosure, seating, eye-contact, and touch. Bern: Peter Lang.
Chicago
Markel Norman N, Markel Norman, . 2009. Five vital signs of conversation : address, self-disclosure, seating, eye-contact, and touch. Bern: Peter Lang.
Harvard
Markel N. N., Markel N., . (2009). Five vital signs of conversation : address, self-disclosure, seating, eye-contact, and touch. Bern: Peter Lang.
MLA
Markel Norman N, Markel Norman, . Five vital signs of conversation : address, self-disclosure, seating, eye-contact, and touch. Bern: Peter Lang. 2009.