Tohutoro APA (7th ed.)
(1977). National geographic index: 1947-1976 (inclusive) (ed.). National geographic society.
Tohutoru Kātū Chicago (17th ed.)
National Geographic Index: 1947-1976 (inclusive). ed. Washington,D.C.: National geographic society, 1977.
Tohutoro MLA (9th ed.)
National Geographic Index: 1947-1976 (inclusive). ed. National geographic society, 1977.
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