Clewer, Ann, author
Pearson Education, 1998
Buku Teks
Huber, Diane L., author
WB Saunders, 2000
Buku Teks
edited by Diane L. Huber
Saunders/Elsevier, 2014
Buku Teks
edited by Steven Spirn and David W. Benfer
Aspen Systems Corporation, 1982
Buku Teks
Sayle, Allan J., author
McGraw-Hill, 1981
Buku Teks