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APA Citation
Li, Y., Béthoux, O., Pang, H., & Ren, D. (n.d.). early Pennsylvanian Odonatoptera from the Xiaheyan locality (Ningxia, China): new material, taxa, and perspectives. Mitteilungen aus dem Museum für Naturkunde in Berlin, 16(1), 117–139. http://access.bl.uk/ark:/81055/vdc_100024807598.0x000053