Langacker, Ronald W.  <br/><br/>
Transitivity, Case, and Grammatical Relations. A Cognitive Grammar Prospectus / 
Ronald W. Langacker. 
 - Universitat Duisburg Gesamthochschule L.A.U.D.   A. 172 
 - Duisburg :  Linguistic Agency Univ. of Duisburg, LAUD :  1987.