| 1. | 
        
    Cambridge, UK : Cambridge University Press, 2021. | 
                | 2. | 
        
    [Northampton, England] : Edward Elgar Publishing Ltd., 2023. | 
                | 3. | 
        
    [New York City, New York] : [Clark Boardman Callaghan], [1986]. 
Swiss german | US 87 1986 | 
 | 
                | 4. | 
        
    Oxford, United Kingdom : Oxford University Press, 2017. | 
                | 5. | 
        
    Hoboken, New Jersey : John Wiley & Sons, Inc., 2010. | 
                | 6. | 
        
    Geneva : Gatt, [1994] 
English | C 383 FIN | 
 | 
                | 7. | 
        
    Cambridge : Cambridge University Press, 2004.Second edition.
 
English | C 14 AME.P | 
 | 
                | 8. | 
        
    New York, USA : Clark Boardman Callaghan, 1997. 
German | 87 US | 
 | 
                | 9. | 
        
    Muenchen : Saur, 1991.28th edition.
 
English | C 11 YEA 1991/92 | 
 | 
                | 10. | 
        
    Leiden : Nijhoff Publishers, 2005.First edition.
 
English | C 13 COO.A | 
 |