MLA

Philipps, John, Sir, 1700-1764. A genealogical table of all the kings and princes of Wales from Cadwalader last King of Britain to Lhewelyn last Prince of Wales of the British blood : with the descent of his present Majesty King George, as also of the Right Honourable Robert Lord Walpole, from Cadwalader, [circa 1723].. https://collections.library.yale.edu/catalog/15960104.

APA, 6th edition

Philipps, John, Sir, 1700-1764. [A genealogical table of all the kings and princes of Wales from Cadwalader last King of Britain to Lhewelyn last Prince of Wales of the British blood : with the descent of his present Majesty King George, as also of the Right Honourable Robert Lord Walpole, from Cadwalader, [circa 1723].]. https://collections.library.yale.edu/catalog/15960104.