Riga, Peter. <br/><br/>
John XXIII and the city of man. 

 - Westminster, Maryland  Newman Press  1966. 
 - 239 p. 
<br/><br/>Bibliographical footnotes. 
<br/><br/><label>LCCN: </label>66016596  
<br/><br/><label>Subjects--Corporate Names: </label><br/>Catholic Church Pope (1958-1963 : John XXIII)  Mater et magistra (15 May 1961)