Simply add a letter after the year to distinguish between different articles. Start at "a" (in lower case) and work your way through the alphabet. So in-text:
Kelly (2022a) discussed the referencing of sources written by the same author in the same year. Although you use letters after the year to distinguish these sources, very rarely would you have to proceed past "b" "c" or "d" (Kelly, 2022b).
In the reference list:
Kelly, A. (2022a) Distinguishing between different articles written by the same author in the same year. The Journal of Referencing Research 1(1) pp1-2
Kelly, A. (2022b) How many sources written by the same author can you reference? The Journal of Referencing Research 1(2) pp3-5
