(1978). Two ages: The age of revolution and the present age. A literary review. Princeton University.
Chicago-čujuhus (17. p.)Two Ages: The Age of Revolution and the Present Age. A Literary Review. Princeton: Princeton University, 1978.
MLA-čujuhus (9. p.)Two Ages: The Age of Revolution and the Present Age. A Literary Review. Princeton University, 1978.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.