Gwartney, James D.
Economics private and public choice/ James D. gwartney, Richard L. Stroup
Harcourt Brace Jovanovich, Publisher, 1987
 Buku Teks
Gwartney, James D.
Economics : private and public choice / James D. Gwartney, Richard L. Stroup ; with the assistance of A.H. Studenmund
Harcourt Brace Jovanovich, Pub., 1990
 Buku Teks
Gwartney, James D.
Economics private and public choice
The Reyden Press, 2000
 Buku Teks
Becker, William E.
A complement to choice an introduction to economics
Prentice-Hall, 1971
 Buku Teks
Atkinson, Lloyd C.
Economics, the science of choice
Richard D. Irwin, 1982
 Buku Teks