Kachorek, J. P. (1991). Direct mail testing for fund raisers: What to test ; how to test ; how to interpret the results. Precept Press, Inc..
Chicago Style (17th ed.) CitationKachorek, Joseph P. Direct Mail Testing for Fund Raisers: What to Test ; How to Test ; How to Interpret the Results. Chicago, Ill.: Precept Press, Inc., 1991.
MLA (8th ed.) CitationKachorek, Joseph P. Direct Mail Testing for Fund Raisers: What to Test ; How to Test ; How to Interpret the Results. Precept Press, Inc., 1991.
Warning: These citations may not always be 100% accurate.