Lockhart, P. (2012). Measurement. Harvard University Press.
Chicago-čujuhus (17. p.)Lockhart, Paul. Measurement. Cambridge, Mass.: Harvard University Press, 2012.
MLA-čujuhus (9. p.)Lockhart, Paul. Measurement. Harvard University Press, 2012.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.