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jstor.org
Jackson, Catherine M. (September 2014). "Synthetical Experiments and Alkaloid Analogues: Liebig, Hofmann, and the Origins of Organic Synthesis". Historical Studies in the Natural Sciences. 44 (4): 319–363. doi:10.1525/hsns.2014.44.4.319. JSTOR10.1525/hsns.2014.44.4.319.
Schmidgen, H. (2003). "Wundt as chemist? A fresh look at his practice and theory of experimentation". American Journal of Psychology. 116 (3): 469–476. doi:10.2307/1423504. JSTOR1423504. PMID14503396.
Schmidgen, H. (2003). "Wundt as chemist? A fresh look at his practice and theory of experimentation". American Journal of Psychology. 116 (3): 469–476. doi:10.2307/1423504. JSTOR1423504. PMID14503396.
Cansler, Clay (Fall 2013). "Where's the Beef?". Chemical Heritage Magazine. 31 (3). Archived from the original on 20 November 2018. Retrieved 20 March 2018.
Cansler, Clay (Fall 2013). "Where's the Beef?". Chemical Heritage Magazine. 31 (3). Archived from the original on 20 November 2018. Retrieved 20 March 2018.