Зенит (Serbian Wikipedia)

Analysis of information sources in references of the Wikipedia article "Зенит" in Serbian language version.

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archive.org

Peter Duffett-Smith (1988). Practical Astronomy with Your Calculator, third edition. Cambridge University Press. стр. 34–36. ISBN 0-521-35699-7.
Chauvenet, William (1900). A Manual of Spherical and Practical Astronomy. J.B. Lippincott Co., Philadelphia. стр. 19,. „chauvenet spherical astronomy.” ,at Google books.
Newcomb, Simon (1906). A Compendium of Spherical Astronomy. Macmillan Co., New York. стр. 90,. ,at Google books.

Newcomb, Simon; Holden, Edward S. (1890). Astronomy. Henry Holt and Co., New York. стр. 14.

van Gent, Robert Harry (2017). „Determining the Sacred Direction of Islam”. Webpages on the History of Astronomy.