APA (7th ed.) Citation

Sullivan, N. (1964). Pioneer astronomers. Sholastic.

Chicago Style (17th ed.) Citation

Sullivan, Navin. Pioneer Astronomers. New York: Sholastic, 1964.

MLA (9th ed.) Citation

Sullivan, Navin. Pioneer Astronomers. Sholastic, 1964.

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