Burton R. Clark, Guy R. Neave, editors-in-cheif
Pergamon Press, 1992
Buku Referensi
Burton R. Clark, Guy R. Neave, editors-in-chief
Pergamon Press, 1992
Buku Referensi
editors: Grant Harman
UNESCO, 1991
Buku Teks
Gordon, Robert Aaron, author
Columbia University Press, 1959
Buku Teks
editor, Burton R. Clark
Pergamon Press, 1992
Buku Referensi