APA aipamena

KING, F. (1980). ENGLISH BUSINESS LETTERS. PT KANISIUS.

Chicago Style aipamena

KING, F.W. ENGLISH BUSINESS LETTERS. PT KANISIUS, 1980.

MLA aipamena

KING, F.W. ENGLISH BUSINESS LETTERS. PT KANISIUS, 1980.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.