Cita APA (7th ed.)

Sekuler, R., & Blake, R. (1990). Perception (2nd ed.). McGraw-Hill.

Cita Chicago (17th ed.)

Sekuler, Robert, i Randolph Blake. Perception. 2nd ed. New York: McGraw-Hill, 1990.

Cita MLA (9th ed.)

Sekuler, Robert, i Randolph Blake. Perception. 2nd ed. McGraw-Hill, 1990.