Tohutoro APA (7th ed.)

Ober Joyce A & U.S. Geological Survey. 2005 minerals yearbook , sulfur.

Tohutoru Kātū Chicago

Ober Joyce A me U.S. Geological Survey. 2005 Minerals Yearbook , Sulfur.

Tohutoro MLA

Ober Joyce A me U.S. Geological Survey. 2005 Minerals Yearbook , Sulfur.

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