Schnelle, J. F., Kirchner, R. E., Casey, J. D., Uselton, P. H., & McNees, M. P. (1977). Patrol evaluation research: A multiple-baseline analysis of saturation police patrolling during day and night hours.

Schnelle, John F., Robert E. Kirchner, Joe D. Casey, Paul H. Uselton, و M. Patrick McNees. Patrol Evaluation Research: A Multiple-baseline Analysis of Saturation Police Patrolling During Day and Night Hours. 1977.

Schnelle, John F., et al. Patrol Evaluation Research: A Multiple-baseline Analysis of Saturation Police Patrolling During Day and Night Hours. 1977.