Cita APA (7a ed.)
Frick, D., & Hoefert, H. (1986). The quality of urban life: Social, psychological, and physical conditions. De Gruyter.
Cita Chicago Style (17a ed.)
Frick, Dieter, y Hans-Wolfgang Hoefert. The Quality of Urban Life: Social, Psychological, and Physical Conditions. Berlin ; New York: De Gruyter, 1986.
Cita MLA (9a ed.)
Frick, Dieter, y Hans-Wolfgang Hoefert. The Quality of Urban Life: Social, Psychological, and Physical Conditions. De Gruyter, 1986.
Precaución: Estas citas no son 100% exactas.