Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

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

Cita MLA (9th ed.)

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