Metode metode Filsafat - Anton Bakker (Galia Indonesia, 1984)
ast c1-2; Bhr/C.3/Bhr C.4 / ir,c.5,6/oen, c.7/sgh c8/ast c.9/ir,c.10/ir,c.11/st, c.12/oen, c.13/ws.c.14/stc12,c.1-14