Παραπομπή APA

National Academy of Sciences (U.S.). (1977). Coal as an energy resource: Conflict and consensus. Washington: National Academy of Sciences.

Παραπομπή Chicago Style

National Academy of Sciences (U.S.). Coal As an Energy Resource: Conflict and Consensus. Washington: National Academy of Sciences, 1977.

Παραπομπή MLA

National Academy of Sciences (U.S.). Coal As an Energy Resource: Conflict and Consensus. Washington: National Academy of Sciences, 1977.

Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.