River basin monetary authorizations, 1969: Chesapeake Bay comprehensive study : hearing, Ninety-first Congress, first session. December 9, 1969.

MLA

United States. River basin monetary authorizations, 1969: Chesapeake Bay comprehensive study : hearing, Ninety-first Congress, first session. December 9, 1969. Washington : U.S. Govt. Print. Off., 1970.

APA

United States. (1970). River basin monetary authorizations, 1969: Chesapeake Bay comprehensive study : hearing, Ninety-first Congress, first session. December 9, 1969. Washington : U.S. Govt. Print. Off..

Chicago

United States. River basin monetary authorizations, 1969: Chesapeake Bay comprehensive study : hearing, Ninety-first Congress, first session. December 9, 1969. Washington : U.S. Govt. Print. Off., 1970.