Ritsuko Kikusawa. <br/><br/>
Optional ergative marking and the emergencce os passive structural in austronesian languages. 

 - Osaka-JA  :   National Museum of Ethnology,   2012. 
 - p. 115-155 
 - Irregular 
 - No. 77(2012) 
 - Senri Ethnological Studies  ;   No. 77 .
 - National Museum of Ethnology. .
<br/><br/><br/>Inglés.