We want to cite a quote and we do not have access to the original source:

We must mention not only the source from which the quote is taken, but

the original source. Generally, we use: "cited in" or "cited by Ex: Agreste Les Cahiers, n* 2, 2000, p. 9; cited in Barlin, H., Letanne, J.P., Machoix, P. et al. Limited liability farms. Paris: CNASEA, 2002, p. 142.