APA-viite (7. p.)

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

Chicago-viite (17. p.)

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

MLA-viite (8. p.)

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