JOHN DUNCAN. (2019). ASTRONOMY (2016 Ed.). PARRAGON BOOK PUBLISHERS.
Chicago Style (17th ed.) CitationJOHN DUNCAN. ASTRONOMY. 2016 Ed. LONDON: PARRAGON BOOK PUBLISHERS, 2019.
MLA (9th ed.) CitationJOHN DUNCAN. ASTRONOMY. 2016 Ed. PARRAGON BOOK PUBLISHERS, 2019.
Warning: These citations may not always be 100% accurate.