APA

United States, . (2020). Maritime transportation: opportunities and challenges : hearing before the Subcommittee on Surface Transportation and Merchant Marine Infrastructure, Safety and Security of the Committee on Commerce, Science, and Transportation, United States Senate, One Hundred Fifteenth Congress, second session, April 24, 2018. Washington: U.S. Government Publishing Office.

Chicago

United States, . 2020. Maritime transportation: opportunities and challenges : hearing before the Subcommittee on Surface Transportation and Merchant Marine Infrastructure, Safety and Security of the Committee on Commerce, Science, and Transportation, United States Senate, One Hundred Fifteenth Congress, second session, April 24, 2018. Washington: U.S. Government Publishing Office.

Harvard

United States, . (2020). Maritime transportation: opportunities and challenges : hearing before the Subcommittee on Surface Transportation and Merchant Marine Infrastructure, Safety and Security of the Committee on Commerce, Science, and Transportation, United States Senate, One Hundred Fifteenth Congress, second session, April 24, 2018. Washington: U.S. Government Publishing Office.

MLA

United States, . Maritime transportation: opportunities and challenges : hearing before the Subcommittee on Surface Transportation and Merchant Marine Infrastructure, Safety and Security of the Committee on Commerce, Science, and Transportation, United States Senate, One Hundred Fifteenth Congress, second session, April 24, 2018. Washington: U.S. Government Publishing Office. 2020.