APA

U.S. Environmental Protection Agency, . (1977). Foreign noise research in surface transportation. Washington DC: U.S. Environmental Protection Agency.

Chicago

U.S. Environmental Protection Agency, . 1977. Foreign noise research in surface transportation. Washington DC: U.S. Environmental Protection Agency.

Harvard

U.S. Environmental Protection Agency, . (1977). Foreign noise research in surface transportation. Washington DC: U.S. Environmental Protection Agency.

MLA

U.S. Environmental Protection Agency, . Foreign noise research in surface transportation. Washington DC: U.S. Environmental Protection Agency. 1977.