Cita APA (7a ed.)
Schiffer, E. (2007). Looking Back and Moving Forward.
Cita Chicago Style (17a ed.)
Schiffer, E. Looking Back and Moving Forward. 2007.
Cita MLA (9a ed.)
Schiffer, E. Looking Back and Moving Forward. 2007.
Precaución: Estas citas no son 100% exactas.