Mateer, James R., author
McGraw-Hill, 2008
Buku Teks
Ma, O. John.
McGraw-Hill, 2008
Multimedia
editor, Karen L. Roos
Springer Science , 2012
eBooks
Foreign languages press, 1962
Buku Teks
Johnson, J., author
Allical Publishers Private , 1963
Buku Teks