APA

United States, . (2018). Combatting the opioid crisis: exploiting vulnerabilities in international mail : hearing before the Permanent Subcommittee on Investigations of the Committee on Homeland Security and Governmental Affairs, United States Senate, One Hundred Fifteenth Congress, second session, January 25, 2018. Washington: U.S. Government Publishing Office.

Chicago

United States, . 2018. Combatting the opioid crisis: exploiting vulnerabilities in international mail : hearing before the Permanent Subcommittee on Investigations of the Committee on Homeland Security and Governmental Affairs, United States Senate, One Hundred Fifteenth Congress, second session, January 25, 2018. Washington: U.S. Government Publishing Office.

Harvard

United States, . (2018). Combatting the opioid crisis: exploiting vulnerabilities in international mail : hearing before the Permanent Subcommittee on Investigations of the Committee on Homeland Security and Governmental Affairs, United States Senate, One Hundred Fifteenth Congress, second session, January 25, 2018. Washington: U.S. Government Publishing Office.

MLA

United States, . Combatting the opioid crisis: exploiting vulnerabilities in international mail : hearing before the Permanent Subcommittee on Investigations of the Committee on Homeland Security and Governmental Affairs, United States Senate, One Hundred Fifteenth Congress, second session, January 25, 2018. Washington: U.S. Government Publishing Office. 2018.