Vernon, Raymond, author
Basic Books, 1971
Buku Teks
Eiteman, David K., author
Pearson, 2010
Buku Teks
Eiteman, David K., author
Pearson, 2001
Buku Teks
Behrman, Jack N., author
Prentice-Hall, 1970
Buku Teks
Levi, Maurice D., 1945-, author
McGraw-Hill, 1990
Buku Teks