モーティマー・アドラー
↑ 須賀前掲論文P75
↑ 須賀前掲論文P76
↑ What Man Has Made of Man, Archive, (1938), OCLC 807118494, https://archive.org/details/whatmanhasmadeof017923mbp .
↑ Mortimer J. Adler (July 6, 1940), “How to Mark a Book”, The Saturday Review of Literature: 11–12