Lighter, Donald, author
Jones and Bartlett Publishers,, 2011
Buku Teks
Safian, Shelly C., author
Delmar, Cengage Learning, 2009
Buku Teks
edited by J. Timothy Harrington and Eric D. Newman
Springer, 2012
eBooks
Bahadir Inozu, Dan Chauncey, Vickie Kamataris, Charles Mount
McGraw-Hill, 2012
Buku Teks
Fallon, L. Fleming, author
Jones & Bartlett Learning, 2013
Buku Teks