Bodian, N. G. (1995). Direct Marketing Rules of Thumb: 1000 Practical and Profitable Ideas to Help You Improve Response : Save Money,and Increase Efficiency in Your Direct. Singapore: McGraw-Hill.

Bodian, Nat G. Direct Marketing Rules of Thumb: 1000 Practical and Profitable Ideas to Help You Improve Response : Save Money,and Increase Efficiency in Your Direct. Singapore: McGraw-Hill, 1995.

Bodian, Nat G. Direct Marketing Rules of Thumb: 1000 Practical and Profitable Ideas to Help You Improve Response : Save Money,and Increase Efficiency in Your Direct. Singapore: McGraw-Hill, 1995.