APA (7th ed.) Citation

Hakkarainen, J., & Keinänen, M. (2023). Formal Ontology. Cambridge University Press.

Chicago Style (17th ed.) Citation

Hakkarainen, Jani, and Markku Keinänen. Formal Ontology. Cambridge: Cambridge University Press, 2023.

MLA (9th ed.) Citation

Hakkarainen, Jani, and Markku Keinänen. Formal Ontology. Cambridge University Press, 2023.