Boleyn and Howard: From the book Heroes of the Reformation, 1904; Grey: From the book The World’s Famous Events; Penn: From the book The Library of Historic Characters and Famous Events, Vol. V, 1895
Boleyn và Howard: Từ sách Heroes of the Reformation, 1904; Grey: Từ sách The World’s Famous Events; Penn: Từ sách The Library of Historic Characters and Famous Events, Tập V, 1895