Παραπομπή APA

Sawers, N. (2009). How to write proposals, sales letters and reports. Viva.

Παραπομπή Chicago Style

Sawers, Neil. How to Write Proposals, Sales Letters and Reports. New Delhi: Viva, 2009.

Παραπομπή MLA

Sawers, Neil. How to Write Proposals, Sales Letters and Reports. Viva, 2009.