Cita APA (7th ed.)

Oldham, J. (1991). The personality self- portrait. Bantam.

Cita Chicago (17th ed.)

Oldham, John. The Personality Self- Portrait. New york: Bantam, 1991.

Cita MLA (9th ed.)

Oldham, John. The Personality Self- Portrait. Bantam, 1991.