Walker, Gordon, author
McGraw-Hill-Irwin, 2004
Buku Teks
Dess, Gregory G., author
McGraw-Hill/Irwin, 2005
Buku Teks
Navarro, Peter, author
Pearson Education, 2006
Buku Teks
Brown, Steve, author
Prentice-Hall, 1996
Buku Teks
Pearce, John A., author
Richard D. Irwin, 1982
Buku Teks