Cita APA (7a ed.)
WINFIELD, P. (1999). WHERE ARE WE NOW?
Cita Chicago Style (17a ed.)
WINFIELD, P. WHERE ARE WE NOW? 1999.
Cita MLA (9a ed.)
WINFIELD, P. WHERE ARE WE NOW? 1999.
Precaución: Estas citas no son 100% exactas.