10-ISBN 0878466193/13-ISBN 9780878466191; 10-ISBN 0878466207/13-ISBN 9780878466207; OCLC 249920897* Lane, Richard.
10-ISBN 0878466193/13-ISBN 9780878466191; 10-ISBN 0878466207/13-ISBN 9780878466207;* Nussbaum, Louis Frédéric and Käthe Roth.