edited by Ivan Ottenness, Robert Capetola, Otterness, Stewart Wong
Raven Press, 1984
Buku Teks
Whelan, R.F., author
Charles C. Thomas, 1967
Buku Teks
Schneider, Jurgen, author
Leipzig , 1967
Buku Teks
Axelsson, Per, author
Quintessence Publishing, 2009
Buku Referensi
Erasmus, Charles J., author
Bobbs-Merrill, 1961
Buku Teks