Gützlaff, Karl Friedrich August 1803-1851. Yuehan yan xing lu. Xinjiabo: Jian xia shu yuan cang ban, Daoguang 17 [1837].
see below
<a rel="nofollow" class="external free" href="https://iiif.lib.harvard.edu/manifests/view/drs:430438758">https://iiif.lib.harvard.edu/manifests/view/drs:430438758</a>