FitzGerald. Spiritual Modalities. Penn State University Press.
Chicago-čujuhus (17. p.)FitzGerald. Spiritual Modalities. Penn State University Press.
MLA-čujuhus (9. p.)FitzGerald. Spiritual Modalities. Penn State University Press.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.