Παραπομπή σε μορφή APA (7η εκδ.)

Widder, K. R. (1999). Battle for the soul: Métis children encounter evangelical Protestants at Mackinaw Mission, 1823-1837. Michigan State University Press.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Widder, Keith R. Battle for the Soul: Métis Children Encounter Evangelical Protestants at Mackinaw Mission, 1823-1837. East Lansing, Mich.: Michigan State University Press, 1999.

Παραπομπή σε μορφή MLA (9th εκδ.)

Widder, Keith R. Battle for the Soul: Métis Children Encounter Evangelical Protestants at Mackinaw Mission, 1823-1837. Michigan State University Press, 1999.