Rector, M., & Trigo, S. Body signs: Portuguese communication om three continents / Monica Rector. Salvato Trigo. The semantics and pragmatics of everyday gestures : proceedings of the Berlin conference April 1998.(2004).

Rector, Monica, and Salvato Trigo. "Body Signs: Portuguese Communication Om Three Continents / Monica Rector. Salvato Trigo." The Semantics and Pragmatics of Everyday Gestures : Proceedings of the Berlin Conference April 1998.(2004) .

Rector, Monica, and Salvato Trigo. "Body Signs: Portuguese Communication Om Three Continents / Monica Rector. Salvato Trigo." The Semantics and Pragmatics of Everyday Gestures : Proceedings of the Berlin Conference April 1998.(2004), .