Cita APA (7a ed.)

Hall, D., & Hinton, M. (1992). Intermediate signal a comprehensive course: Classbook. Filmscan Lingual House.

Cita Chicago Style (17a ed.)

Hall, Diane, y Michael Hinton. Intermediate Signal a Comprehensive Course: Classbook. London: Filmscan Lingual House, 1992.

Cita MLA (9a ed.)

Hall, Diane, y Michael Hinton. Intermediate Signal a Comprehensive Course: Classbook. Filmscan Lingual House, 1992.