APA-ийн эшлэл(7 дахь хэвлэлт)

Johansson, I. (2004). Ontological investigations: An inquiry into the categories of nature, man and society. Ontos Verlag.

Чикаго-гийн эшлэл (17 дахь хэвлэлт)

Johansson, Ingvar. Ontological Investigations: An Inquiry into the Categories of Nature, Man and Society. Frankfurt: Ontos Verlag, 2004.

MLA -ийн эшлэл (9 дэх хэвлэлт)

Johansson, Ingvar. Ontological Investigations: An Inquiry into the Categories of Nature, Man and Society. Ontos Verlag, 2004.