Marin, Guy B., author
John Wiley & Sons, Incorporated, 2018
Buku Teks
Moore, John W., author
John Wiley & Sons, 1981
Buku Teks
Hill, Charles G., author
Wiley, 1977
Buku Teks
Amdur, I.
McGraw-Hill, 1996
Buku Teks
Entelis, S.G., author
John Wiley & Sons, 1976
Buku Teks