APA

Barr W. P., United States, . (2016). Memorandum from the Attorney General: guidance regarding Department activities to protect certain facilities or assets from unmanned aircraft and unmanned aircraft systems. Washington, D.C: U.S. Department of Justice, National Security Division.

Chicago

Barr William Pelham, United States, . 2016. Memorandum from the Attorney General: guidance regarding Department activities to protect certain facilities or assets from unmanned aircraft and unmanned aircraft systems. Washington, D.C: U.S. Department of Justice, National Security Division.

Harvard

Barr W. P., United States, . (2016). Memorandum from the Attorney General: guidance regarding Department activities to protect certain facilities or assets from unmanned aircraft and unmanned aircraft systems. Washington, D.C: U.S. Department of Justice, National Security Division.

MLA

Barr William Pelham, United States, . Memorandum from the Attorney General: guidance regarding Department activities to protect certain facilities or assets from unmanned aircraft and unmanned aircraft systems. Washington, D.C: U.S. Department of Justice, National Security Division. 2016.