APA-referens

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

Chicago-stil citat

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

MLA-referens

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

Varning: dessa hänvisningar är inte alltid fullständigt riktiga.