APA   Click to copy
Waliya, Y. J. (2019). Letter to the African Union.

Chicago/Turabian   Click to copy
Waliya, Yohanna Joseph. “Letter to the African Union” (2019).

MLA   Click to copy
Waliya, Yohanna Joseph. Letter to the African Union. 2019.

@article{yohanna2019a,
  title = {Letter to the African Union},
  year = {2019},
  author = {Waliya, Yohanna Joseph}
}