Cita APA (7a ed.)

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

Cita Chicago Style (17a ed.)

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

Cita MLA (9a ed.)

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