APA

Nine Curt C. J., . (1975). Non-verbal communication in Puerto Rico. New York: C.A.N.B.B.E.

Chicago

Nine Curt Carmen Judith, . 1975. Non-verbal communication in Puerto Rico. New York: C.A.N.B.B.E.

Harvard

Nine Curt C. J., . (1975). Non-verbal communication in Puerto Rico. New York: C.A.N.B.B.E.

MLA

Nine Curt Carmen Judith, . Non-verbal communication in Puerto Rico. New York: C.A.N.B.B.E. 1975.