APA (7th ed.) Citation

Melsen, A. G. M. v. (1961). The philosophy of nature (3rd ed.). Duquesne University Press.

Chicago Style (17th ed.) Citation

Melsen, Andrew G. M. van. The Philosophy of Nature. 3rd ed. Pittsburgh: Duquesne University Press, 1961.

MLA (9th ed.) Citation

Melsen, Andrew G. M. van. The Philosophy of Nature. 3rd ed. Duquesne University Press, 1961.