Max Scheler, Formalism in Ethics and Non-Formal Ethics of Values (1913-16, originally published in German as Der Formalismus in der Ethik und die materiale Wertethik)[4]
Niels Bohr, "On the Constitution of Atoms and Molecules" (1913)[5]
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^Zur Mechanik des Geistes. OCLC World Cat. OCLC 9903760.
^"Rosa Luxemburg The Accumulation of Capital". marxists. MIA: Writers: Luxemburg. Retrieved 30 September 2015.
^"Formalism in Ethics and Non-Formal Ethics of Values Work by Scheler". britannica. Encyclopedia britannica. Retrieved 30 September 2015.
^Bohr, N. (July 1913). "On the constitution of atoms and molecules". Philosophical Magazine. Series 6. 26 (151): 1–25. doi:10.1080/14786441308634955.
^"Review". The Cambridge Review. 34 (853): 351. 1913-03-06. Archived from the original on 2006-04-30. Retrieved 6 November 2016.