Calif ICS Press , 1984
Buku Teks
edited by Wolfram F. Hanrieder
Westview Press, 1986
Buku Teks
edited by Ernest W. Lefever
Frederick A. Praeger, 1962
Buku Teks
edited by Edward McWhinney [and others]
Martinus Nijhoff Publishers, 1991
Buku Teks
edited by Paul R. Viotti
Westview Press, 1986
Buku Teks