Παραπομπή APA

Ferguson, K. (2002). Tycho & Kepler: The unlikely partnership that forever changed our understanding of the heavens. New York: Walker & Company.

Παραπομπή Chicago Style

Ferguson, Kitty. Tycho & Kepler: The Unlikely Partnership That Forever Changed Our Understanding of the Heavens. New York: Walker & Company, 2002.

Παραπομπή MLA

Ferguson, Kitty. Tycho & Kepler: The Unlikely Partnership That Forever Changed Our Understanding of the Heavens. New York: Walker & Company, 2002.

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