Cita APA (7a ed.)
MURPHY, S., & ET AL. (1999). THE EFFECT OF KEEPING AND END-PRODUCT ON INTRINSIC MOTIVATION.
Cita Chicago Style (17a ed.)
MURPHY, S., y ET AL. THE EFFECT OF KEEPING AND END-PRODUCT ON INTRINSIC MOTIVATION. 1999.
Cita MLA (9a ed.)
MURPHY, S., y ET AL. THE EFFECT OF KEEPING AND END-PRODUCT ON INTRINSIC MOTIVATION. 1999.
Precaución: Estas citas no son 100% exactas.