Style de citation APA

Buckley, E. A. (1961). How to increase sales with letters. McGraw Hill book company.

Style de citation Chicago

Buckley, Earle A. How to Increase Sales with Letters. New York: McGraw Hill book company, 1961.

Style de citation MLA

Buckley, Earle A. How to Increase Sales with Letters. McGraw Hill book company, 1961.

Attention : ces citations peuvent ne pas être correctes à 100%.