Prof. Dr. Sondang P. Siagian, MPA text Jakarta Bumi Aksara 2016 id 651.1 9789795261001 180119 20180119141533 INLIS000000000007757 Converted from MARCXML to MODS version 3.5 using MARC21slim2MODS3-5.xsl (Revision 1.106 2014/12/19)