资料来源
W. W. Yen, “Rev. Y.K. Yen, M.A..” In Illustrious Chinese Christians: Biographical Sketches, edited by William Preston Bentley. Cincinnati, Ohio: The Standard Publishing Company, 1906, 47-58. Reprinted by ULAN Press, Coppell, Texas, 2021.
W. W. Yen, “Rev. Y.K. Yen, M.A..” In Illustrious Chinese Christians: Biographical Sketches, edited by William Preston Bentley. Cincinnati, Ohio: The Standard Publishing Company, 1906, 47-58. Reprinted by ULAN Press, Coppell, Texas, 2021.