Analysis of folk literature in grey literature from the national library of China. Gl-Conf. Series: Conf. Proc., 2019-December(3), 163-168, . Recuperado de https://www.scopus.com/inward/record.uri?eid=2-s2.0-85075678961&partnerID=40&md5=951c6f2f1ba3365fc079523ad8e1e576 (Original work published 0 B.C.E.)
. (2019).