Pound, Linda, author
McGraw-Hill, 2011
Buku Teks
Tim Waller, Judy Whitmarsh, Karen Clarke
McGraw-Hill, 2011
Buku Teks
D’Onofrio, Mauro, editor
[Springer, ], 2012
eBooks
Zimmer, Heinrich, author
Meridian Books, 1956
Buku Teks
Maxey, Chester C., author
Macmillan, 1961
Buku Teks