Style de citation APA (7e éd.)

Okuma, P. C. (2013). Beyond witnessing: A new way of humanising the world (First edition.). Peter Lang.

Style de citation Chicago (17e éd.)

Okuma, Peter Chidi. Beyond Witnessing: A New Way of Humanising the World. First edition. Frankfurt am Main ; New York: Peter Lang, 2013.

Style de citation MLA (9e éd.)

Okuma, Peter Chidi. Beyond Witnessing: A New Way of Humanising the World. First edition. Peter Lang, 2013.