Gaya APA

Allora, Ralph. (2009). Winning sales letters-from prospect to close . New York: McGraw-Hill.

Gaya Chicago

Allora, Ralph. Winning sales letters-from prospect to close. New York: McGraw-Hill, 2009. Text.

Gaya MLA

Allora, Ralph. Winning sales letters-from prospect to close. New York: McGraw-Hill, 2009. Text.

Gaya Turabian

Allora, Ralph. Winning sales letters-from prospect to close. New York: McGraw-Hill, 2009. Print.