Gaa, Charles J.
Federal income taxation : fundamental questions, problems, and cases, vol. II
McGraw-Hill , 1965
 Buku Referensi
Gaa, Charles J.
Federal income taxation : fundamental questions, problems, and cases, vol. I
McGraw-Hill , 1965
 Buku Referensi
Federal Income Taxation: cases and materials
by Stanley S. Survey ... [and others]
Foundation Press, 1972
 Buku Teks
Andrews, William D., 1931-
Federal income taxation: cases, problems and notes
Aspen Law & Business, 1973
 Buku Teks
Andrews, William D., 1931-
Federal income taxation: cases, problems and notes
Little, Brown, 1969
 Buku Teks