Also published: New York : Basic Books, 1974.
Bibliography: p.385-388. _ Includes index.
The von Richthofen sisters : the triumphant and the tragic modes of love : Else and Frieda von Richthofen, Otto Gross, Max Weber, and D.H. Lawrence, in the years 1870-1970 by Martin Green. ISBN 0297767844. Published by Weidenfeld and Nicolson in 1974. Publication and catalogue information, links to buy online and reader comments.