APA (7th ed.) Citation

Cumpa, J., & Tegtmeier, E. (2001). Ontological categories. Ontos Verlag.

Chicago Style (17th ed.) Citation

Cumpa, Javier, and Erwin Tegtmeier. Ontological Categories. Frankfurt: Ontos Verlag, 2001.

MLA (8th ed.) Citation

Cumpa, Javier, and Erwin Tegtmeier. Ontological Categories. Ontos Verlag, 2001.

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