Bowden, Elbert V., author
Alexander Hamilton Institute , 1962
Buku Teks
by Richard G. Lipsey ... [et al]
Harper Collins College, 1993
Buku Teks
Kohler, Heinz, author
Healt and Company, 1992
Buku Teks
Lipsey, Richard G., author
Harper & Row, 1981
Buku Teks
Lipsey, Richard G., author
Harper & Row, 1978
Buku Teks