Gutsche, Robert E., Jr., 1980-, author
Routledge, 2019
Buku Teks
edited by Tilo Felgenhauer, Karsten Geabler
Routledge, 2018
Buku Teks
Holloway, Lewis, author
Prentice-Hall, 2001
Buku Teks
Kaniss, Phyllis, author
The University of Chicago Press , 1991
Buku Teks
edited by Nicholas Blomley, Daveid Delaney, Richard T. Ford
Blackwell, 2001
Buku Teks