APA (7th ed.) Citation

Illinois University Elementary School Science Project. (1966). Astronomy: Gravitation. University of Illinois.

Chicago Style (17th ed.) Citation

Illinois University Elementary School Science Project. Astronomy: Gravitation. Urbana: University of Illinois, 1966.

MLA (9th ed.) Citation

Illinois University Elementary School Science Project. Astronomy: Gravitation. University of Illinois, 1966.

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