Ôkoma, S. (1998). Gakumon no susume, Bunmeiron no gairyaku, Fukuô jiden sô bunsetsu sakuin. Keiô Gijuku Fukuzawa Kenkyû Sentâ.
Chicago Style (17th ed.) CitationÔkoma, Seiichi. Gakumon No Susume, Bunmeiron No Gairyaku, Fukuô Jiden Sô Bunsetsu Sakuin. Tôkyô: Keiô Gijuku Fukuzawa Kenkyû Sentâ, 1998.
MLA (9th ed.) CitationÔkoma, Seiichi. Gakumon No Susume, Bunmeiron No Gairyaku, Fukuô Jiden Sô Bunsetsu Sakuin. Keiô Gijuku Fukuzawa Kenkyû Sentâ, 1998.
Warning: These citations may not always be 100% accurate.