Cullen, John B. (John Brooks), 1948-, author
Thomson, 2005
Buku Teks
Martyn, Howe, author
Lexington Books, 1972
Buku Teks
Rien T. Segers, editor
Springer International Publishing, 2016
eBooks
Sethi, S. Prakash, author
Goodyear, 1973
Buku Teks
Prasad, S. Benjamin
Prentice-Hall, 1976
Buku Teks