If you cite two or more works within the same parentheses they should be in alphabetical order of author.
....(Phillips, Ajrouch, & Hillcoat-Nalletamby, 2010; Rolfe, Jasper, & Freshwater, 2010).
Arrange two or more works by the same authors (in the same order) by year of publication. Place in-press citations last. Give the authors’ last names once; for each subsequent work, give only the date.
.... (Davies, 2008, 2010, 2012)