Putnam, C
New York Scribner 1945
Buku Teks
Richardson, Dorothy M.
Alfred A. Knoff, [date of publication not identified]
Buku Teks
Ellwood, Jr., Robert S.
Oyasato Research Institute Tenri University,, 1982
Buku Teks
Artikel Jurnal
Rahmi, author
Fakultas Teknik Universitas Indonesia, 2020
UI - Tesis (Membership)