Paterson, Robert G. (Robert Gildersleeve), author
McGraw-Hill, 1950
Buku Teks
edited by Elena Andresen, Erin DeFries Bouldin
Jossey- Bass, 2010
Buku Teks
Carney, Jan K., author
Jones Bartlett Learning, 2016
Buku Teks
Burt, Brian A., author
An academic Internet Publishers, 2007
Buku Teks
Keefe, Robert H., author
Springer Publishing Company, 2013
Buku Teks