APA引文

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

Chicago Edition Citation

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

MLA引文

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

警告：這些引文格式不一定是100％准確.