APA (7th ed.) Citation

Wright, H. (1966). Explorer of the universe: A biography of George Ellery Hale ([1st ed.].). Dutton.

Chicago Style (17th ed.) Citation

Wright, Helen. Explorer of the Universe: A Biography of George Ellery Hale. [1st ed.]. New York: Dutton, 1966.

MLA (9th ed.) Citation

Wright, Helen. Explorer of the Universe: A Biography of George Ellery Hale. [1st ed.]. Dutton, 1966.