APA (7th ed.) Citation

(1993). I wonder why...Stars twinkle: And other questions about space. Reader's digest young families inc..

Chicago Style (17th ed.) Citation

I Wonder Why...Stars Twinkle: And Other Questions About Space. New York: Reader's digest young families inc., 1993.

MLA (9th ed.) Citation

I Wonder Why...Stars Twinkle: And Other Questions About Space. Reader's digest young families inc., 1993.