Cita APA (7a ed.)

Littlewood, W. (1992). Teaching oral communication: A methodological framework. [s.n].

Cita Chicago Style (17a ed.)

Littlewood, William. Teaching Oral Communication: A Methodological Framework. Blackwell Oxford: [s.n], 1992.

Cita MLA (9a ed.)

Littlewood, William. Teaching Oral Communication: A Methodological Framework. [s.n], 1992.