APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

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

MLA (9th ed.) Citation

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