Royer, J. (1984). Educational psychology. A.A.Knopf.
Chicago-čujuhus (17. p.)Royer, J. Educational Psychology. New york: A.A.Knopf, 1984.
MLA-čujuhus (9. p.)Royer, J. Educational Psychology. A.A.Knopf, 1984.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.