APA

United States, . (2018). Fentanyl remains the most significant synthetic opioid threat and poses the greatest threat to the opioid user market in the United States. [Washington, D.C.]: DEA Strategic Intelligence Section.

Chicago

United States, . 2018. Fentanyl remains the most significant synthetic opioid threat and poses the greatest threat to the opioid user market in the United States. [Washington, D.C.]: DEA Strategic Intelligence Section.

Harvard

United States, . (2018). Fentanyl remains the most significant synthetic opioid threat and poses the greatest threat to the opioid user market in the United States. [Washington, D.C.]: DEA Strategic Intelligence Section.

MLA

United States, . Fentanyl remains the most significant synthetic opioid threat and poses the greatest threat to the opioid user market in the United States. [Washington, D.C.]: DEA Strategic Intelligence Section. 2018.