APA (7th ed.) Citation

Gilmore, R. (2003). Once upon a universe: Not-so-Grimm tales of cosmology. Copernicus Books.

Chicago Style (17th ed.) Citation

Gilmore, Robert. Once upon a Universe: Not-so-Grimm Tales of Cosmology. New York: Copernicus Books, 2003.

MLA (9th ed.) Citation

Gilmore, Robert. Once upon a Universe: Not-so-Grimm Tales of Cosmology. Copernicus Books, 2003.

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