Cita APA (7a ed.)

Pennell, S., Curtis, C., & Henderson, J. H. (1988). Guardian Angels: Citizen Response to Crime in Selected Cities of the United States, 1984. [Verlag nicht ermittelbar]. https://doi.org/10.3886/ICPSR08935.v1

Cita Chicago Style (17a ed.)

Pennell, Susan, Christine Curtis, y Joel H. Henderson. Guardian Angels: Citizen Response to Crime in Selected Cities of the United States, 1984. [Erscheinungsort nicht ermittelbar]: [Verlag nicht ermittelbar], 1988. https://doi.org/10.3886/ICPSR08935.v1.

Cita MLA (9a ed.)

Pennell, Susan, et al. Guardian Angels: Citizen Response to Crime in Selected Cities of the United States, 1984. [Verlag nicht ermittelbar], 1988. https://doi.org/10.3886/ICPSR08935.v1.