Hillenius WJ, Phillips DA, Rehorek SJ (2007). «'A new lachrymal gland with an excretory duct in red and fallow deer' by Johann jacob Harder (1694): English translation and historical perspective». Annals of Anatomy189 (5): 423-33. PMID17910396. doi:10.1016/j.aanat.2006.10.008.
Hillenius WJ, Phillips DA, Rehorek SJ (2007). «'A new lachrymal gland with an excretory duct in red and fallow deer' by Johann jacob Harder (1694): English translation and historical perspective». Annals of Anatomy189 (5): 423-33. PMID17910396. doi:10.1016/j.aanat.2006.10.008.