Cita APA
Hester, J. J. (2007). 21st century astronomy (2nd ed.). W.W. Norton.
Citación estilo Chicago
Hester, John Jeffrey. 21st Century Astronomy. 2nd ed. New York: W.W. Norton, 2007.
Cita MLA
Hester, John Jeffrey. 21st Century Astronomy. 2nd ed. W.W. Norton, 2007.
Warning: These citations may not always be 100% accurate.