Oppenheim, Alan V.
Prentice Hall of India, 1997
Buku Teks
Cohen, Albert
Chapman & Hall, 1995
Buku Teks
edited by Alan V. Oppenheim
Prentice-Hall, 1978
Buku Teks
Stanley, William D.
Reston Publishing, 1984
Buku Teks
Salivahanan, S.
Tata McGraw-Hill, 2011
Buku Teks