Ngā kupu hautoa kōpae

Tohutoro APA (7th ed.)
Olson, S. F. (1998). Open horizons (1st University of Minnesota ed.). University of Minnesota Press.
Tohutoru Kātū Chicago (17th ed.)
Olson, Sigurd F. Open Horizons. 1st University of Minnesota ed. Minneapolis: University of Minnesota Press, 1998.
Tohutoro MLA (9th ed.)
Olson, Sigurd F. Open Horizons. 1st University of Minnesota ed. University of Minnesota Press, 1998.
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