Jacobs, James B.
Cornell University Press, 1983
Buku Teks
Lucken, Karol M., author
Routledge, Taylor & Francis Group, 2017
Buku Teks
edited by Lewis Perry and Michael Fellman
Louisiana State University Press , 1979
Buku Teks
Bearden, William O., author
McGraw-Hill/Irwin, 2004
Buku Teks
Statsky, William P., 1943-, author
West Publishing, 1974
Buku Teks