John Gill Commentary 2 Kings 15:36

"Now the rest of the acts of Jotham, and all that he did, are they not written in the book of the chronicles of the kings of Judah?" — 2 Kings 15:36 (ASV)

Now the rest of the acts of Jotham, and all that he did, are
they not written in the book of the chronicles of the kings of Judah ?
] Of which mention is often made by the inspired historians; some of Jotham's other acts are recorded in the canonical book of Chronicles, (2 Chronicles 27:1) .