Heinz Rölleke / Tilo Medek:  Das große Buch der Volkslieder [The great book of folk songs] (Kiepenheuer & Witsch, Köln, 1993)
   
Georg Scherer: Die schönsten Deutschen Volkslieder mit ihren eigenthümlichen Singweisen [The most beautiful German folk songs and their typical styles] [1863] (Opera-Verlag, Wiesbaden, 1976)
   
Hartmann Goertz / Gerlinde Haid:  Die schönsten Lieder Österreichs [Austria’s most beautiful songs] (Ueberreuter, Wien – Heidelberg, 1979)
   
Ludwig Erk:  Erk's Deutscher Liederschatz [Erk’s treausure of German songs] (C. F. Peters, Leipzig, 1928)
   
Wolfgang Suppan:  Volkslied [Folk song] (Metzler, Stuttgart, 1978)
   
Genkichi Nakasone: Die Einführung der westlichen, besonders deutschen Musik im Japan der Meiji-Zeit [The introduction of Western, particularly German, music during the Meiji era in Japan] (Lit-Verlag, Münster – Hamburg – London, 2003)
   
Die Musik in Geschichte und Gegenwart [Music in history and present] (Bärenreiter, Kassel,1994 – 2008)
   
Brockhaus-Enzyklopädie (F. A. Brockhaus, Mannheim, 1987 – 1996)
   
Rihei Nakamura: Yôgakudônyusha no kiseki  [Stages of Western music’s conveyors in Japan] (Tôsui Shobô, 2000)
   
Keizô Horiuchi / Takeshi Inoue: Nihonshôkashû [Japan’s songbook] (Iwanami Shoten, 2005)
   
Hiroshi Yasuda: "Shôka" to iu kiseki, Jûni no monogatari [The miracle of singing – 12 stories] (Bungeishunjû, 2003)
   
Josef Kreiner: Ôkon no tokugawa-japan, Siebold oyako no mita nihon [Dawning of Tokugawa – observations of Siebold sr. and jr. in Japan] (NHK publishers, 1998)
   
Michio Miyazaki: Siebold to sakoku-kaikokunihon [Siebold and Japan’s isolation as well as opening] (Shibunkakushuppan, 1997)
   
"sekaino rekishi" henshû-iinkai: Môichido yomu yamakawasekaishi  [“Yamakawa World History” – read once again] (Yamakawa Shuppansha, 2009)