Kohout, Frank J., author
John Wiley & Sons, 1974
Buku Teks
Healey, Joseph F., 1945-, author
Cengage Learning, 2015
Buku Teks
Howell, David C., author
Thomson Higher Education, 2004
Buku Teks
Healey, Joseph F., 1945-, author
Wadsworth, 1996
Buku Teks
Williams, Frederick
Harcourt Brace Jovanovich College Publishers, 1992
Buku Teks