APA aipamena

Dugger, J. (1992). Business Letters for Busy People. Kuala Lumpur: Golden books centre.

Chicago Style aipamena

Dugger, Jim. Business Letters for Busy People. Kuala Lumpur: Golden books centre, 1992.

MLA aipamena

Dugger, Jim. Business Letters for Busy People. Kuala Lumpur: Golden books centre, 1992.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.