Sekuler, R. (2002). Perception (4th ed.). McGraw-Hill.
Chicago Style aipamenaSekuler, Robert. Perception. 4th ed. Boston: McGraw-Hill, 2002.
MLA aipamenaSekuler, Robert. Perception. 4th ed. McGraw-Hill, 2002.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.