APA Citation
Ridpath, I. (1999). Introduction to astronomy. New York, NY: Todtri.
Chicago Style CitationRidpath, Ian. Introduction to Astronomy. New York, NY: Todtri, 1999.
MLA CitationRidpath, Ian. Introduction to Astronomy. New York, NY: Todtri, 1999.
Warning: These citations may not always be 100% accurate.