APA-referens (7:e uppl.)

Monippally, M. (1997). The craft of business letter writing. TMH.

Chicago-referens (17:e uppl.)

Monippally, Mathew. The Craft of Business Letter Writing. New delhi: TMH, 1997.

MLA-referens (9:e uppl.)

Monippally, Mathew. The Craft of Business Letter Writing. TMH, 1997.