Deismireacht APA

Hester, J. J. (2002). 21st century astronomy. New York: Norton.

Trích dẫn kiểu Chicago

Hester, John Jeffrey. 21st Century Astronomy. New York: Norton, 2002.

Deismireacht MLA

Hester, John Jeffrey. 21st Century Astronomy. New York: Norton, 2002.

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