カンブリア紀第四期 (Japanese Wikipedia)

Analysis of information sources in references of the Wikipedia article "カンブリア紀第四期" in Japanese language version.

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Peng, S.C.; Babcock, L.E. (21 September 2011). “Continuing progress on chronostratigraphic subdivision of the Cambrian System”. Bulletin of Geosciences: 391–396. doi:10.3140/bull.geosci.1273 2012年11月21日閲覧。.
Yuan, Jinliang; Ng, Tin-Wai (2014). “Tentative correlation of the Duyunian (Cambrian Series 2, Stage 4) and the Taijiangian (Cambrian Series 3, Stage 5) between South China and the Mediterranean region”. GFF (Geological Society of Sweden) 136 (1/2): 314–319. doi:10.1080/11035897.2014.898331.