APA (7th ed.) Citation

Payne, W. W., Wilson, H. C., & Gingrich, C. H. Popular astronomy. Goodsell Observatory of Carleton College.

Chicago Style (17th ed.) Citation

Payne, William Wallace, Herbert Couper Wilson, and Curvin Henry Gingrich. Popular Astronomy. Northfield, Minnesota, U.S.A..: Goodsell Observatory of Carleton College.

MLA (9th ed.) Citation

Payne, William Wallace, et al. Popular Astronomy. Goodsell Observatory of Carleton College.