Cita APA (7a ed.)

Burton, C. E., Crews, G. A., & Crews, A. D. (2013). The Only Thing That Stops a Guy with a Bad Policy is a Guy with a Good Policy: An Examination of the NRA’s “National School Shield” Proposal.

Cita Chicago Style (17a ed.)

Burton, Catherine E., Gordon A. Crews, y Angela D. Crews. The Only Thing That Stops a Guy with a Bad Policy Is a Guy with a Good Policy: An Examination of the NRA’s “National School Shield” Proposal. 2013.

Cita MLA (9a ed.)

Burton, Catherine E., et al. The Only Thing That Stops a Guy with a Bad Policy Is a Guy with a Good Policy: An Examination of the NRA’s “National School Shield” Proposal. 2013.