APA-viite

Heim, M. (1994). The metaphysics of virtual reality (1st issued as paperback.). New York ; Oxford: Oxford university press.

Chicago-tyylinen lähdeviittaus

Heim, Michael. The Metaphysics of Virtual Reality. 1st issued as paperback. New York ; Oxford: Oxford university press, 1994.

MLA-viite

Heim, Michael. The Metaphysics of Virtual Reality. 1st issued as paperback. New York ; Oxford: Oxford university press, 1994.

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