Easson, W. M. (1974). Psychiatry Examination Review.
Chicago-čujuhus (17. p.)Easson, William M. Psychiatry Examination Review. 1974.
MLA-čujuhus (9. p.)Easson, William M. Psychiatry Examination Review. 1974.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.