Παραπομπή σε μορφή APA (7η εκδ.)

Olsen, H. (1963). Painting portraits: How to capture likeness and personality. Oak Tree Press.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Olsen, Helen. Painting Portraits: How to Capture Likeness and Personality. London: Oak Tree Press, 1963.

Παραπομπή σε μορφή MLA (9th εκδ.)

Olsen, Helen. Painting Portraits: How to Capture Likeness and Personality. Oak Tree Press, 1963.