Niswonger, C. Rollin (Clifford Rollin), 1907-, author
South-Western Pub., Co. , 1977
Buku Teks
Pyle, William W., author
Richard D. Irwin, 1980
Buku Teks
Stevenson, Russell A., author
Alexander Hamilton Institute, 1962
Buku Teks
Hosch, Gordon A., author
Prentice-Hall, 1979
Buku Teks
Weygandt, Jerry J., author
John Wiley & Sons, 2005
Buku Teks