Cita APA

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

Citación estilo Chicago

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

Cita MLA

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

Warning: These citations may not always be 100% accurate.