Registro de Citas

Cita APA (7a ed.)
Levin, H. L. (2003). The earth through time (7th. ed.). John Wiley.
Cita Chicago Style (17a ed.)
Levin, Harold Leonard. The Earth Through Time. 7th. ed. Hoboken, New Jersey: John Wiley, 2003.
Cita MLA (9a ed.)
Levin, Harold Leonard. The Earth Through Time. 7th. ed. John Wiley, 2003.
Precaución: Estas citas no son 100% exactas.