APA-viite (7. p.)

Tuulmets, T. (1991). The perception of visual numerosity. Department of Psychology, University of Umeå.

Chicago-viite (17. p.)

Tuulmets, Tiia. The Perception of Visual Numerosity. Umeå: Department of Psychology, University of Umeå, 1991.

MLA-viite (8. p.)

Tuulmets, Tiia. The Perception of Visual Numerosity. Department of Psychology, University of Umeå, 1991.