APA

United States, . (2018). Mass migration in Europe: assimilation, integration, and security : hearing before the Subcommittee on Europe, Eurasia, and Emerging Threats of the Committee on Foreign Affairs, House of Representatives, One Hundred Fifteenth Congress, second session, April 26, 2018. Washington: U.S. Government Publishing Office.

Chicago

United States, . 2018. Mass migration in Europe: assimilation, integration, and security : hearing before the Subcommittee on Europe, Eurasia, and Emerging Threats of the Committee on Foreign Affairs, House of Representatives, One Hundred Fifteenth Congress, second session, April 26, 2018. Washington: U.S. Government Publishing Office.

Harvard

United States, . (2018). Mass migration in Europe: assimilation, integration, and security : hearing before the Subcommittee on Europe, Eurasia, and Emerging Threats of the Committee on Foreign Affairs, House of Representatives, One Hundred Fifteenth Congress, second session, April 26, 2018. Washington: U.S. Government Publishing Office.

MLA

United States, . Mass migration in Europe: assimilation, integration, and security : hearing before the Subcommittee on Europe, Eurasia, and Emerging Threats of the Committee on Foreign Affairs, House of Representatives, One Hundred Fifteenth Congress, second session, April 26, 2018. Washington: U.S. Government Publishing Office. 2018.