By Mueller, John Henry.
Boston Houghton Mifflin 1961 .
xv, 442 p.

By Sutherland, Edwin Hardin.
Chicago University of Chicago Press 1973 .
xxxvi, 284 p. , "Much of this book was originally published in The Sutherland papers ... [published in] 1956." 0226780554

By Schuessler, Karl F.,.
San Francisco Jossey-Bass 1982 .
xviii, 183 p. , Includes index. 0875895484