Cowles Creative Pub, 1997
Buku Teks
Lane Books , 1952
Buku Teks
Andersen, Margaret L., author
Thomson, Wadsworth, 2009
Buku Teks
Rogers, Alan, author
CRC Press, Taylor & Francis Group, 2009
Buku Teks
Schiller, Bradley R., author
McGraw-Hill, Irwin, 2005
Buku Teks