Neuner, John J.W.
Richard D Irwin, Inc. , 1949
Buku Teks
Brock, Horace R., author
McGraw-Hill, 1989
Buku Teks
VanDerbeck, Edward J.
South Western Cengage Learning, 2013
Buku Teks
Schmiedicke, Albert E., author
Ohio South-Western Publishing , 1988
Buku Teks
Rayburn, Letricia Gayle, author
Richard D. Irwin, 1989
Buku Teks