Warren, R. P. (1983). Chief Joseph of the Nez Perce, who called themselves the Nimipu, "the real people": A poem. Random House.
Citazione stile Chigago Style (17a edizione)Warren, Robert Penn. Chief Joseph of the Nez Perce, Who Called Themselves the Nimipu, "the Real People": A Poem. New York: Random House, 1983.
Citatione MLA (9a ed.)Warren, Robert Penn. Chief Joseph of the Nez Perce, Who Called Themselves the Nimipu, "the Real People": A Poem. Random House, 1983.
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