APA (7th ed.) Citation
Sagan, C. (1997). Miles de millones. Ediciones B.
Chicago Style (17th ed.) Citation
Sagan, Carl. Miles De Millones. Barcelona: Ediciones B, 1997.
MLA (9th ed.) Citation
Sagan, Carl. Miles De Millones. Ediciones B, 1997.
Warning: These citations may not always be 100% accurate.