APA (7e ed.) Bronvermelding

Vernon, P. E. (1958). Educational testing and test-form factors. Educational Testing Service.

Chicago (17e ed.) Bronvermelding

Vernon, Philip E. Educational Testing and Test-form Factors. Princeton, N.J.: Educational Testing Service, 1958.

MLA (8e ed.) Bronvermelding

Vernon, Philip E. Educational Testing and Test-form Factors. Educational Testing Service, 1958.