Tohutoro APA (7th ed.)
Schwarze, G. (1891). Die Firngrenze in Amerika.
Tohutoru Kātū Chicago (17th ed.)
Schwarze, Gotthilf. Die Firngrenze in Amerika. Leipzig, 1891.
Tohutoro MLA (9th ed.)
Schwarze, Gotthilf. Die Firngrenze in Amerika. 1891.
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