editor, Robert Maynard Hutchins
Encyclopaedia Britannica, 1952
Buku Referensi
Adler, Mortimer J., editor in chief
Chicago, Encyclopedia Britanica, Inc, 1990, 1994
Buku Referensi
Mortimer J. Adler, editor in chief
Encyclopedia Britanica,
Buku Referensi
Mortimer J. Adler, editor in chief
Encyclopedia Britanica, 1995
Buku Referensi
Mortimer J. Adler, editor in chief
Encyclopedia Britanica,
Buku Referensi