APA Citation

(2011). Sky & Telescope, the Essential Magazine of Astronomy. December 1999. Sky Publishing Corp.

Trích dẫn kiểu Chicago

Sky & Telescope, the Essential Magazine of Astronomy. December 1999. Sky Publishing Corp, 2011.

MLA Citation

Sky & Telescope, the Essential Magazine of Astronomy. December 1999. Sky Publishing Corp, 2011.

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