APA Citatie

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

Chicago Style citaat

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

MLA citatie

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

Let op: Deze citaties zijn niet altijd 100% accuraat.