editor in chief, Mortimer J. Adler
Encyclopaedia Britannica, Inc., 1996
Buku Referensi
Encyclopaedia Britannica, Inc., 1952
Buku Referensi
editor in chief, Mortimer J. Adler
Encyclopedia Britanica, 1990
Buku Referensi
editor in cheief, Mortimer J. Adler
Encyclopedia Britanica, 1996
Buku Referensi
Adler, Mortimer J., 1902-2001 (change)
Chicago, Encyclopedia Britanica, Inc, 1990,
Buku Referensi