Prudential supervision : what works and what doesn't
edited by Frederic S. Mishkin
University of Chicago Press, 2001
 Buku Teks
Assessing aid : what works, what doesn't, and why
Oxford University Press, 1998
 Buku Teks
Sutherland, Max
Advertising and the mind of the consumer: what works, what doesn't, and why
Allen and Unwin, 2000
 Buku Teks
Gosh, Barbara
Public enterprise in Kenya : what works, what doesn't, and why / Barbara Grosh
Lynne Rienner, 1991
 Buku Teks
Rosenfeld, Isadore
Dr. Rosenfeld's guide to alternative medicine : what works, what doesn't- and what's right for you
Random House, 1996
 Buku Referensi