Krohne, David T., author
Brook/Cole, 2001
Buku Teks
Smeins, Fred E., author
Drive Kendall/Hunt, 1978
Buku Teks
Benton, Allen H., author
Tata McGraw-Hill, 1976
Buku Teks
Smith, Robert Leo, author
Harper Collins, 1990
Buku Teks
Smith, Robert Leo, author
Benjamin Cummings, 2001
Buku Teks