If there are two authors of a work, both should be cited.
Example:
Kwiecinski and Rothschild (2016) state that...
OR
...(Kwiecinski & Rothschild, 2016).
Note: Link the two authors’ names with and when cited outside parentheses. Link with an ampersand (&) inside parentheses.
Last name, Initial(s)., & Last name, Initial(s). (Year). Article title. Journal title in italics, Volume number in italics(issue or part number), page numbers. DOI (if available)
Example:
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