Dictionary of scientific biography. Volume 14.. Addison Emery Verrill - Johann Zwelfer. /
Charles Coulston Gillispie, editor in chief 
. - New York  : Charles Scribner's Sons,  1976 
. - [11], 640 p.  29 cm. 
<br/><br/> Напис на титулі : Edited under the auspices of the American Council of Learned Societies..