Van der Spuy, Rex, author
Springer, 2012
eBooks
Teng, Wayne C., author
Prentice Hall of India, 1981
Buku Teks
Bowles, Joseph E., author
McGraw-Hill , 1982
Buku Teks
Bowles, Joseph E., author
McGraw-Hill , 1968
Buku Teks
Tomlinson, M. J. (Michael John), author
John Wiley & Sons, 1963
Buku Teks