APA-Zitierstil (7. Ausg.)

Pennell, S., Curtis, C., & Henderson, J. H. (1985). Guardian angels. Guardian angels an assessment of citizen response to crime.

Chicago-Zitierstil (17. Ausg.)

Pennell, Susan, Christine Curtis, und Joel H. Henderson. "Guardian Angels." Guardian Angels an Assessment of Citizen Response to Crime 1985.

MLA-Zitierstil (8. Ausg.)

Pennell, Susan, et al. "Guardian Angels." Guardian Angels an Assessment of Citizen Response to Crime, 1985.