Cita APA (7a ed.)

Gudwin, R., & Queiroz, J. (2007). Semiotics and intelligent systems development. Hershey, PA : Idea Group Pub..

Cita Chicago Style (17a ed.)

Gudwin, Ricardo, y Joao Queiroz. Semiotics and Intelligent Systems Development. Hershey, PA : Idea Group Pub., 2007.

Cita MLA (9a ed.)

Gudwin, Ricardo, y Joao Queiroz. Semiotics and Intelligent Systems Development. Hershey, PA : Idea Group Pub., 2007.