Ismail, salim, author
Diversionbooks, 2014
Buku Teks
Elliott, Donald S., author
[American Library association, American Library association], 2007
eBooks
Smith, Courtney D.
McGraw-Hill , 1985
Buku Teks
Riebel, John P., author
Arco, 1978
Buku Teks
Miller, James E., author
Willowgreen, 1998
Buku Teks