edited by Werner Z. Hirsch
Johns Hopkins University Press, 1966
Buku Teks
edited by John Friedmann and William Alonso
MIT Press, 1975
Buku Teks
edited by David M. Dunham, Jos G.M. Hilhorst
Mouton, 1971
Buku Teks
Artikel Jurnal
Glasson, John, author
Hutchinson, 1975
Buku Teks