APA引文

(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引文

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

警告：这些引文格式不一定是100％准确.