Tohutoro APA (7th ed.)
Ogilvy, C. S., & Wigand, K. (1976). Unterhaltsame Geometrie: Excursions in geometry. Vieweg.
Tohutoru Kātū Chicago (17th ed.)
Ogilvy, Charles Stanley, me Klaus Wigand. Unterhaltsame Geometrie: Excursions in Geometry. Braunschweig, Wiesbaden: Vieweg, 1976.
Tohutoro MLA (9th ed.)
Ogilvy, Charles Stanley, me Klaus Wigand. Unterhaltsame Geometrie: Excursions in Geometry. Vieweg, 1976.
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