APA (7th ed.) Citation

Linton Ian. (1997). 30 Minutes to write sales letters. Kogan Page.

Chicago Style (17th ed.) Citation

Linton Ian. 30 Minutes to Write Sales Letters. London: Kogan Page, 1997.

MLA (9th ed.) Citation

Linton Ian. 30 Minutes to Write Sales Letters. Kogan Page, 1997.