Berger, P. L. (1976). Pyramids of sacrifice: Political ethics and social change. Anchor.
Citazione stile Chigago Style (17a edizione)Berger, Peter Ludwig. Pyramids of Sacrifice: Political Ethics and Social Change. Garden City: Anchor, 1976.
Citatione MLA (9a ed.)Berger, Peter Ludwig. Pyramids of Sacrifice: Political Ethics and Social Change. Anchor, 1976.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.