…ty of Cambridge" . 6 July 2015. 1 2 3 4 5 6 7 "Ernst Haeckel" (article), German Wikipedia , 26 October 2006, webpage: DE-Wiki-Ernst-Haeckel : last paragraph of "Leben" (Life) section. [ butuh sumber yang lebih baik ] ↑ Felden, Emil [in Jerman] (1914). "Felden Pastor an St. Martin…