https://fr.wikipedia.org/wiki/Jacques_Valier
https://cloudflare-ipfs.com/ipfs/bafykbzaceauvewomnybjbmkcphh3mm2emrvvdastzdo4gwrbirjymyyyfrhlu?filename=Pierre%20Salama%2C%20Jacques%20Valier%20-%20Une%20introduction%20%C3%A0%20l%E2%80%99%C3%A9conomie%20politique-Maspero%20%281973%29.pdf
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-Pierre Salama & Jacques Valier, Une introduction à l’économie politique, Maspero, 1973, 104 pages.
https://cloudflare-ipfs.com/ipfs/bafykbzaceauvewomnybjbmkcphh3mm2emrvvdastzdo4gwrbirjymyyyfrhlu?filename=Pierre%20Salama%2C%20Jacques%20Valier%20-%20Une%20introduction%20%C3%A0%20l%E2%80%99%C3%A9conomie%20politique-Maspero%20%281973%29.pdf
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-Pierre Salama & Jacques Valier, Une introduction à l’économie politique, Maspero, 1973, 104 pages.