APA ציטוט

(2007). 21st century astronomy: Stars and galaxies. New York: W.W. Norton.

Trích dẫn kiểu Chicago

21st Century Astronomy: Stars and Galaxies. New York: W.W. Norton, 2007.

ציטוט MLA

21st Century Astronomy: Stars and Galaxies. New York: W.W. Norton, 2007.