edited by Robert U. Ayres and Leslie W. Ayres
Edward Elgar Publishing, 2001
Buku Referensi
edited by C. Kenneth Dodd
Oxford University Press, 2016
eBooks
Graedel, T.E
Prentice-Hall, 1995
Buku Teks
Dupont, R. Ryan, author
CRC Press, 2017
Buku Teks
edited by Kjell B. Zandin
McGraw-Hill, 2001
Buku Referensi