Sijabat, W. Bonar   1931- <br/><br/>
Abu si Singamangaraja :  arti historis, politis, ekonomis dan religius si Singa mangaraja XII / 
W. Bonar Sidjabat. 
 - Jakarta :  Penerbit Sinar Harapan,  1982. 
 - 487 p. :  ill. ;  21 cm. 
<br/><br/>Bibliography : page 466-484 
<br/><br/><label>Subjects--Personal Names: </label><br/>Sisingamangaraja XIII, Raja,  1860-1907. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Batak--Politics and government.
<br/><br/><label>Subjects--Geographic Terms: </label><br/>Sumatera Utara (Indonesia)--Politics and government.