Cita APA (7th ed.)

Sekuler, R., & Blake, R. (2002). Perception (4th ed.). McGraw-Hill.

Cita Chicago (17th ed.)

Sekuler, Robert, i Randolph Blake. Perception. 4th ed. Boston: McGraw-Hill, 2002.

Cita MLA (9th ed.)

Sekuler, Robert, i Randolph Blake. Perception. 4th ed. McGraw-Hill, 2002.