In the book: <a href="//commons.wikimedia.org/w/index.php?title=Albert_Moll&amp;action=edit&amp;redlink=1" class="new" title="Albert Moll (page does not exist)">Albert Moll</a>, <i>Handbuch der Sexualwissenschaften</i>, Verlag Von F.C. Vogel, Leipzig 1921, p. 627.
Albert Moll
Self-scanned