Gaya APA

Swanson, C, P., Greener, M. (1971). The penguin dictionary of commerce . Middlesex: Middlesex: Penguin Books; 1971.

Gaya MLA

Swanson, Carl, P.., Greener, Michael. "The penguin dictionary of commerce". Middlesex: Middlesex: Penguin Books; 1971, 1971. Text.