Burman, Harold G., author
Allyn and Bacon, 1968
Buku Teks
Miller, G. Tyler (George Tyler), 1931-, author
Wadsworth, 1991
Buku Teks
Holum, John R., author
John Wiley & Sons, 1987
Buku Teks
Holum, John R., author
John Wiley & Sons, 1995
Buku Teks
Timm, John Arrend
McGraw-Hill, 1966
Buku Teks