Nong kuang bu di zhi diao cha suo (China), Guo li Beiping yan jiu yuan. Di zhi xue yan jiu suo, & Shi ye bu di zhi diao cha suo (China). (1930). Geological bulletin. Geological Survey of China (under the Ministry of Agriculture and Mines) and the Section of Geology of the National Academy of Peiping.
Lua i Stíl Chicago (17ú heag.)Nong kuang bu di zhi diao cha suo (China), Guo li Beiping yan jiu yuan. Di zhi xue yan jiu suo, agus Shi ye bu di zhi diao cha suo (China). Geological Bulletin. Peiping: Geological Survey of China (under the Ministry of Agriculture and Mines) and the Section of Geology of the National Academy of Peiping, 1930.
Lua MLA (8ú heag.)Nong kuang bu di zhi diao cha suo (China), et al. Geological Bulletin. Geological Survey of China (under the Ministry of Agriculture and Mines) and the Section of Geology of the National Academy of Peiping, 1930.