Hiroshi Masuda, University of Tokyo Press, 1996 ISBN 978-4-13-030104-6* "A Study on Purge from Public Service", Hiroshi Masuda, Iwanamo Shoten 1998 ISBN 978-4-00-002914-8* Sakamoto Mamoru, "Shishifunjin - the Story of Shigeyoshi Matsumae" Nishinippon Shimbun, 1983, ISBN 4-8167-0049-8.
Hiroshi Masuda, University of Tokyo Press, 1996 ISBN 978-4-13-030104-6* "A Study on Purge from Public Service", Hiroshi Masuda, Iwanamo Shoten 1998 ISBN 978-4-00-002914-8*Sakamoto Mamoru, "Shishifunjin - the Story of Shigeyoshi Matsumae" Nishinippon Shimbun, 1983, ISBN 4-8167-0049-8.