APA

United States, . (1957). Surface transportation (safety legislation): hearings before subcommittee, 85th Congress, 1st session on bills to provide for greater safety in surface transportation, Mar. 28-Apr. 12, 1957. [Washington, D.C.]: .

Chicago

United States, . 1957. Surface transportation (safety legislation): hearings before subcommittee, 85th Congress, 1st session on bills to provide for greater safety in surface transportation, Mar. 28-Apr. 12, 1957. [Washington, D.C.]: .

Harvard

United States, . (1957). Surface transportation (safety legislation): hearings before subcommittee, 85th Congress, 1st session on bills to provide for greater safety in surface transportation, Mar. 28-Apr. 12, 1957. [Washington, D.C.]: .

MLA

United States, . Surface transportation (safety legislation): hearings before subcommittee, 85th Congress, 1st session on bills to provide for greater safety in surface transportation, Mar. 28-Apr. 12, 1957. [Washington, D.C.]: . 1957.