Vézelay Group. (1991). Global risks at stake from thought to action. Newsletter From Vézelay.
Citação norma ChicagoVézelay Group. Global Risks At Stake From Thought to Action. Newsletter From Vézelay, 1991.
Citação norma MLAVézelay Group. Global Risks At Stake From Thought to Action. Newsletter From Vézelay, 1991.
Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.