ISBN 0-86140-306-1*Pethica, James L. "Gregory, (Isabella) Augusta, Lady Gregory (1852–1932)", "Oxford Dictionary of National Biography", Oxford University Press, 2004.
ISBN 0-86140-306-1* Pethica, James L. "Gregory, (Isabella) Augusta, Lady Gregory (1852–1932)", "Oxford Dictionary of National Biography", Oxford University Press, 2004.