Citazione Stile APA (7a Edizione)

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

Citazione stile Chigago Style (17a edizione)

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

Citatione MLA (9a ed.)

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