When I make multiple citations for a line/paragraph, (i.e. Author1 et al. 1960; Author 2. 1980; Author3 et al. 2010) I prefer to arrange them in chronological date order (obviously, older references being referred to prior to more recent ones).
I find this ultimately leads to a better ordered reference/bibliography that builds a foundation of knowledge per idea. In a sense, reading the bibliography alone outlines the history of ideas that support your premise.