Mortimer J. Adler, editor in chief
Encyclopedia Britanica, 1996
Buku Referensi
editor, Robert Maynard Hutchins
Encyclopaedia Britannica, 1952
Buku Referensi
Robert Maynard Hutchins, editor in chief
Encyclopaedia Britannica, Inc., 1952
Buku Referensi
Robert Maynard Hutchins, editor in chief
Encyclopaedia Britannica, Inc., 1952
Buku Referensi
Robert Maynard Hutchins, editor in chief
Encyclopaedia Britannica, Inc., 1952
Buku Referensi