APA Edition Citation

Walls, L. D. (2009). The passage to cosmos Alexander von Humboldt and the shaping of America / Laura Dassow Walls: Alexander von Humboldt and the shaping of America. University of Chicago Press.

Chicago Edition Citation

Walls, Laura Dassow. The Passage to Cosmos Alexander Von Humboldt and the Shaping of America / Laura Dassow Walls: Alexander Von Humboldt and the Shaping of America. Chicago: University of Chicago Press, 2009.

MLA Edition Citation

Walls, Laura Dassow. The Passage to Cosmos Alexander Von Humboldt and the Shaping of America / Laura Dassow Walls: Alexander Von Humboldt and the Shaping of America. University of Chicago Press, 2009.