Pfiffner, John N., author
Prentice-Hall, 1964
Buku Teks
Benton, Lewis R., author
McGraw-Hill, 1972
Buku Teks
Boyd, Branford B., author
McGraw-Hill , 1984
Buku Teks
Halloran, Jack, 1931-, author
Prentice-Hall, 1986
Buku Teks
Luthans, Fred, author
McGraw-Hill , 1979
Buku Teks