According to the Student Learning Guide, what percentage of middle school students are either a bully or a victim of bullying?

Mariana would like to include a reference to a journal article in her research paper. which reference is presented in the correct format and contains the needed information? lifestyle changes that impact obesity. national journal of health. campos d. peer reviewed by gotlieb h. and ramirez m. march 2012; 10: 7-10. campos d. lifestyle changes that impact obesity. national journal of health. march 2012; 10: 7-10. campos d. lifestyle changes that impact obesity. national journal of health. peer reviewed by gotlieb h. and ramirez m.. march 2012; 10: 7-10. lifestyle changes that impact obesity. national journal of health. campos d. march 2012; 10: 7-10.