Burger, J. M. (1999). "The Foot-in-the-Door Compliance Procedure: A Multiple-Process Analysis and Review". Personality and Social Psychology Review. 3 (4): 303–325. doi:10.1207/s15327957pspr0304_2. PMID15661679.
Burger, J. M. (1999). "The Foot-in-the-Door Compliance Procedure: A Multiple-Process Analysis and Review". Personality and Social Psychology Review. 3 (4): 303–325. doi:10.1207/s15327957pspr0304_2. PMID15661679.