Treshow, Michael
McGraw-Hill, 1976
Buku Teks
edited by Jonathan Rigg
Archipelago Press, 1996
Buku Teks
Boughey, Arthur S.
McMillan Publisher, 1975
Buku Teks
edited by Amos Rapoport
Angus and Robertson , 1972
Buku Teks
Greenwood, Ned H.
Duxbury Press, 1979
Buku Teks