APA Style

Allora, Ralph,. (2010). Winning sales letters--from prospect to close . New York :: McGraw-Hill.

Chicago Style

Allora, Ralph,. Winning sales letters--from prospect to close. New York :: McGraw-Hill, 2010. .

MLA Style

Allora, Ralph,. Winning sales letters--from prospect to close. New York :: McGraw-Hill, 2010. .

Turabian Style

Allora, Ralph,. Winning sales letters--from prospect to close. New York :: McGraw-Hill, 2010. .