APA-ийн эшлэл(7 дахь хэвлэлт)

ebrary, Inc, & Esfeld, M. (2006). John Heil: Symposium on his ontological point of view. Ontos Verlag.

Чикаго-гийн эшлэл (17 дахь хэвлэлт)

ebrary, Inc, ба Michael Esfeld. John Heil: Symposium on His Ontological Point of View. Frankfurt: Ontos Verlag, 2006.

MLA -ийн эшлэл (9 дэх хэвлэлт)

ebrary, Inc, ба Michael Esfeld. John Heil: Symposium on His Ontological Point of View. Ontos Verlag, 2006.