found:His The speculations on metaphysics ... 1868.
found:Mitchell, S. Tao te ching, 1988:CIP data sheet (Tzu, Lao) CIP t.p. (Lao Tzu)
found:His Das Eine als Weltgesetz und Vorbild, 1942:t.p. (Lau-Dse)
found:Ngô, Tất Tố. Lão-tử, c1987.
found:His Li Tan Tao te ching keng cheng, 1990.
found:Chʻin, H.C. Lao-tzu ti chʻuan shuo, 1990:summary (Li Erh; t. Po-yang)
found:Grosse Religionsstifter, c1992:t.p. (Lao Zi)
found:OCLC database, Dec. 10, 2001(hdgs.: Laozi; Lao-tzu; Lâo-tzu, 604-531 B.C.; usage: Laozi, Lâo-tsze, Lau-Tsze, Lao-Tse, Laotse, Lao-dz', Lao-dz, Lao-tzu, Lao Tzŭ, Lao Tzŭ', Lao-tsï, Lao Čhơ̄, Lao Čhư̄, Lao-Tseu, Lau-Dsi, Lao Zi, Lão-tử, Laot︠s︡zy, Lao-chün, Laʼo Ṭsu)
found:The spirit of Lao Tsu, 2001.
found:Tāvō tē jiṅ, 2002:t.p. (Lāvō Ṭcu)
found:OCLC, January 27, 2020(access point: 老子 = Laozi; usage: 老子 = Laozi)
found:Bai du bai ke WWW site, January 27, 2020( 老子 = Laozi; original name: 李耳 = Li, Er; zi: 聃 = Dan; zi: 伯阳 = Boyang)
found:Mȯr-u̇n yosun-u sudur, 2010:title page (Louzi [in Mongolian script] Cyrillic spelling: Лао-цзы = Lao-t︠s︡zy or Лао-зы = Lao-zy]) Chinese colophon (老子 = Laozi)
