If you cite two or more works within the same parentheses they should be in alphabetical order of author.
...(Ashley et al., 2014; Kwiecinski & Rothschild, 2016).
Arrange two or more works by the same authors (in the same order) by year of publication. Give the authors' last names once; for each subsequent work, give only the date.
...(Davies, 2008, 2010, 2012).
Ashley, C., Kibbe, S., & Thornton, S. (2014). Experiential learning in second Life: A simulation in retail management. Atlantic Marketing Journal, 3(2), 94-113. https://digitalcommons.kennesaw.edu/cgi/viewcontent.cgi?article=1123&context=amj
Kwiecinski, J., & Rothschild, B. (2016). No rheumatoid arthritis in ancient Egypt: A reappraisal. Rheumatology International, 36(6),891-895. https://doi.org/10.1007/s00296-015-3405-z