Phillips, Fred
McGraw-Hill, 2016
Buku Teks
MacFarland, George A., author
McGraw-Hill, 1936
Buku Teks
Schick, P. Charlene, author
Prentice-Hall, 1987
Buku Teks
Yorston, Robert Keith, Sir., author
Law Book Company, 1966
Buku Teks
Pyle, William W., author
Richard D. Irwin, 1980
Buku Teks