Cita APA (7a ed.)

Strutt, P. (1992). Longman Business english usage. Longman.

Cita Chicago Style (17a ed.)

Strutt, Peter. Longman Business English Usage. London: Longman, 1992.

Cita MLA (9a ed.)

Strutt, Peter. Longman Business English Usage. Longman, 1992.