Παραπομπή σε μορφή APA (7η εκδ.)

Gotthelf, A., & Lennox, J. G. (2013). Concepts and their role in knowledge: Reflections on objectivist epistemology. Pittsburgh University Press.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Gotthelf, Allan, και James G. Lennox. Concepts and Their Role in Knowledge: Reflections on Objectivist Epistemology. Pittsburgh: Pittsburgh University Press, 2013.

Παραπομπή σε μορφή MLA (8th εκδ.)

Gotthelf, Allan, και James G. Lennox. Concepts and Their Role in Knowledge: Reflections on Objectivist Epistemology. Pittsburgh University Press, 2013.