Citazione Stile APA (7a Edizione)

ASHLEY A. (1984). HANDBOOK OF COMMERCIAL CORRESPONDENCE. OXFORD UNIVERSITY PRESS.

Citazione stile Chigago Style (17a edizione)

ASHLEY A. HANDBOOK OF COMMERCIAL CORRESPONDENCE. NEW DELHI BOMBAY: OXFORD UNIVERSITY PRESS, 1984.

Citatione MLA (9a ed.)

ASHLEY A. HANDBOOK OF COMMERCIAL CORRESPONDENCE. OXFORD UNIVERSITY PRESS, 1984.