Παραπομπή σε μορφή APA (7η εκδ.)

Humphreys, G., & Olson, A. (2001). Separating effects of orthographic similarity and contour summation in the identification of masked letter strings.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Humphreys, G., και A. Olson. Separating Effects of Orthographic Similarity and Contour Summation in the Identification of Masked Letter Strings. 2001.

Παραπομπή σε μορφή MLA (9th εκδ.)

Humphreys, G., και A. Olson. Separating Effects of Orthographic Similarity and Contour Summation in the Identification of Masked Letter Strings. 2001.