Pansini, Anthony J.
The Fairmont Press, 1994
Buku Teks
John Wiley & Sons, 1980
Buku Teks
Kaplan, Jacob J.
N.Y. Frederick A. Praeger , 1968
Buku Teks
Brown, Richard E.
CRC Press, Taylor & Francis Group, 2009
Buku Teks
edited by Arthur H. Seidman
McGraw-Hill, 1983
Buku Referensi