Musser, Gary L.
John Wiley & Sons, 2006
Buku Teks
Bennett, Albert B.
McGraw-Hill , 2001
Buku Teks
Beckmann, Sybilla
Pearson Addison Wesley, 2008
Buku Teks
Phares Odaffer, Randall Charles, Thomas Cooney, John Dossey, Jane Schielack
Pearson Addison Wesley, 2008
Buku Teks
Garstens, Helen L.
Macmillan, 1969
Buku Teks