Wagner, Harvey M.
Prentice-Hall, 1972
Buku Teks
Markland, Robert E.
John Wiley & Sons, 1987
Buku Teks
Miller, David W.
Prentice-Hall of India, 1973
Buku Teks
Miller, David W.
Prentice-Hall, 1960
Buku Teks
Russell, Roberta S.
Pearson Education, 2003
Buku Teks