APA Edition Citation

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

Chicago Edition Citation

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

MLA Edition Citation

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

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