Παραπομπή σε μορφή APA (7η εκδ.)

Lewis, H. D. (1969). The elusive mind: Based on the first series of the Gifford lectures delivered in the University of Edinburgh, 1966-68. Allen & Unwin.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Lewis, Hywel David. The Elusive Mind: Based on the First Series of the Gifford Lectures Delivered in the University of Edinburgh, 1966-68. London: Allen & Unwin, 1969.

Παραπομπή σε μορφή MLA (9th εκδ.)

Lewis, Hywel David. The Elusive Mind: Based on the First Series of the Gifford Lectures Delivered in the University of Edinburgh, 1966-68. Allen & Unwin, 1969.