APA (7e ed.) Bronvermelding

National Foreign Assessment Center (U.S.). (1980). USSR, coal industry problems and prospects. Central Intelligence Agency, National Foreign Assessment Center.

Chicago (17e ed.) Bronvermelding

National Foreign Assessment Center (U.S.). USSR, Coal Industry Problems and Prospects. Washington, D.C.: Central Intelligence Agency, National Foreign Assessment Center, 1980.

MLA (8e ed.) Bronvermelding

National Foreign Assessment Center (U.S.). USSR, Coal Industry Problems and Prospects. Central Intelligence Agency, National Foreign Assessment Center, 1980.