Cita APA (7a ed.)

Matthews, G., & Evans, C. (1992). The space invaders. Heinemann English Language Teaching.

Cita Chicago Style (17a ed.)

Matthews, Geoffrey, y Chris Evans. The Space Invaders. Oxford: Heinemann English Language Teaching, 1992.

Cita MLA (9a ed.)

Matthews, Geoffrey, y Chris Evans. The Space Invaders. Heinemann English Language Teaching, 1992.