APA-čujuhus (7. p.)
Okuma, P. C. (2013). Beyond witnessing: A new way of humanising the world (First edition.). Peter Lang.
Chicago-čujuhus (17. p.)
Okuma, Peter Chidi. Beyond Witnessing: A New Way of Humanising the World. First edition. Frankfurt am Main ; New York: Peter Lang, 2013.
MLA-čujuhus (9. p.)
Okuma, Peter Chidi. Beyond Witnessing: A New Way of Humanising the World. First edition. Peter Lang, 2013.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.