APA (7th ed.) Citation

DeGrood, D. H. (1970). Philosophies of essence: An examination of the category of essence. Wolters-Noordhoff.

Chicago Style (17th ed.) Citation

DeGrood, David H. Philosophies of Essence: An Examination of the Category of Essence. Groningen: Wolters-Noordhoff, 1970.

MLA (8th ed.) Citation

DeGrood, David H. Philosophies of Essence: An Examination of the Category of Essence. Wolters-Noordhoff, 1970.

Warning: These citations may not always be 100% accurate.