Fricker, Jon D.
Pearson/Prentice Hall, 2004
Buku Teks
Hennes, Robert G.
McGraw-Hill, 1969
Buku Teks
Papacostas, C. S.
Pearson/Prentice Hall, 2005
Buku Teks
Hay, William W.
John Wiley & Sons, 1977
Buku Teks
Hay, William W.
John Wiley & Sons, 1961
Buku Teks