«El preu real de cada cosa, el que cada cosa costa realment a l'home que vol adquirir-la, és el treball i la molèstia d'adquirir-la.»
Text de l'edició incorporada · anglès
«The real price of every thing, what every thing really costs to the man who wants to acquire it, is the toil and trouble of acquiring it.»
— Adam Smith, An Inquiry into the Nature and Causes of the Wealth of Nations
Cita aquesta obra
- APAAdam Smith. (n.d.). An Inquiry into the Nature and Causes of the Wealth of Nations. SigPhi. https://sigphiai.com/ca/works/adam-smith/an-inquiry-into-the-nature-and-causes-of-the-wealth-of-nations
- MLAAdam Smith. "An Inquiry into the Nature and Causes of the Wealth of Nations." SigPhi, https://sigphiai.com/ca/works/adam-smith/an-inquiry-into-the-nature-and-causes-of-the-wealth-of-nations.
- ChicagoAdam Smith. An Inquiry into the Nature and Causes of the Wealth of Nations. SigPhi. https://sigphiai.com/ca/works/adam-smith/an-inquiry-into-the-nature-and-causes-of-the-wealth-of-nations.