Cita APA

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

Citación estilo Chicago

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

Cita MLA

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

Precaución: Estas citas no son 100% exactas.