Tohutoro APA (7th ed.)
Calhoun, D. 1993 Yearbook of Science and the Future. Encyclopaedia Britannica.
Tohutoru Kātū Chicago (17th ed.)
Calhoun, David. 1993 Yearbook of Science and the Future. Chicago, EUA: Encyclopaedia Britannica.
Tohutoro MLA (9th ed.)
Calhoun, David. 1993 Yearbook of Science and the Future. Encyclopaedia Britannica.
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