RT Article T1 Effects of school resource officers on school crime and responses to school crime JF Criminology & public policy VO 19 IS 3 SP 905 OP 940 A1 Gottfredson, Denise C. A2 Greene, Angela D. A2 Hagen, Carol A. A2 Harmon, Michele A. A2 Bauer, Erin L. A2 Tang, Zhiqun A2 Crosse, Scott LA English YR 2020 UL https://krimdok.uni-tuebingen.de/Record/1912533014 DO 10.1111/1745-9133.12512