Παραπομπή APA

Swineford, F. (1948). The Nature of the General Verbal And Spatial Bi Factors. University of Chicago Press.

Παραπομπή Chicago Style

Swineford, Frances. The Nature of the General Verbal And Spatial Bi Factors. USA: University of Chicago Press, 1948.

Παραπομπή MLA

Swineford, Frances. The Nature of the General Verbal And Spatial Bi Factors. University of Chicago Press, 1948.