National Geographic Society (U.S.). Cartographic Division, Chamberlin, W., & Grazzini, A. D. (1970). The heavens. The Society.
Chicago Style (17th ed.) CitationNational Geographic Society (U.S.). Cartographic Division, Wellman Chamberlin, and Athos D. Grazzini. The Heavens. Washington, D.C.: The Society, 1970.
MLA (9th ed.) CitationNational Geographic Society (U.S.). Cartographic Division, et al. The Heavens. The Society, 1970.
Warning: These citations may not always be 100% accurate.