APA (7th ed.) Citation

Van Helden, A. (1977). The invention of the telescope. American Philosophical Society.

Chicago Style (17th ed.) Citation

Van Helden, Albert. The Invention of the Telescope. Philadelphia: American Philosophical Society, 1977.

MLA (9th ed.) Citation

Van Helden, Albert. The Invention of the Telescope. American Philosophical Society, 1977.

Warning: These citations may not always be 100% accurate.