APA استشهاد

ASHLEY, A. (1992). HANDBOOK OF COMMERCIAL CORRESPONDENCE (2nd ed.). OXFORD UNIVERSITY PRESS.

استشهاد بنمط شيكاغو

ASHLEY, A. HANDBOOK OF COMMERCIAL CORRESPONDENCE. 2nd ed. NEW YORK: OXFORD UNIVERSITY PRESS, 1992.

MLA استشهاد

ASHLEY, A. HANDBOOK OF COMMERCIAL CORRESPONDENCE. 2nd ed. OXFORD UNIVERSITY PRESS, 1992.