APA (7th ed.) Zitazioa

Pearson, C. (1978). Getting down to business in english. Heinmann Educational Books.

Chicago Style (17th ed.) Zitazioa

Pearson, Christopher. Getting Down to Business in English. London: Heinmann Educational Books, 1978.

MLA (9th ed.) Zitazioa

Pearson, Christopher. Getting Down to Business in English. Heinmann Educational Books, 1978.