Hester Jeff, Blumenthal George, & Burstein David. (2002). 21st Century Astronomy (In lần thứ 1.). England: Norton.
シカゴスタイル引用形Hester Jeff, Blumenthal George, , Burstein David. 21st Century Astronomy. In lần thứ 1. England: Norton, 2002.
MLA引用形式Hester Jeff, Blumenthal George, , Burstein David. 21st Century Astronomy. In lần thứ 1. England: Norton, 2002.
警告: この引用は必ずしも正確ではありません.