APA (7th ed.) Citation

Effingham, N. (2013). An introduction to ontology / Nikk Effingham. Polity Press.

Chicago Style (17th ed.) Citation

Effingham, Nikk. An Introduction to Ontology / Nikk Effingham. Cambridge: Polity Press, 2013.

MLA (9th ed.) Citation

Effingham, Nikk. An Introduction to Ontology / Nikk Effingham. Polity Press, 2013.

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