Cita APA (7a ed.)

Benn, C., & Dummet, P. (1992). Business first: A first course in business english. Heinemann.

Cita Chicago Style (17a ed.)

Benn, Colin, y Paul Dummet. Business First: A First Course in Business English. Oxford: Heinemann, 1992.

Cita MLA (9a ed.)

Benn, Colin, y Paul Dummet. Business First: A First Course in Business English. Heinemann, 1992.