Egluryn phraethineb. sebh, dosparth ar retoreg, vn oʿr saith gelbhydhyd, yn dysculhuniaith ymadrodh, aʿi pherthynassau - Perry, Henry (Printiedig gann Ioan Danter yn Lhundain, 1595)
"A Welsh treatise on rhetoric, the outlines of which had previously been written by William Salesbury"--DNB. - Dedication signed: Henricus Perræus. - Includes index. - Reproduction of the original in the National Library of Wales. - STC (2nd ed.), 19775