Wheeler, Ruric E., author
John Wiley & Sons, 1979
Buku Teks SO
Miller, Charles D., author
Scott, Foresman and Co., 1978
Buku Teks
Gibilisco, Stan, 1953-, author
McGraw-Hill, 2013
Buku Teks
Herrmann, Norbert, author
Springer, 2012
eBooks
Shepherd, Valerie, author
Pinter, 1990
Buku Teks