Toba mengubah dunia
By: penulis, Ahmad Arif [and three others] ; editor, Ahmad Arif
Series: Seri ekspedisi cincin api Kompas
Publisher: Penerbit Buku Kompas
Published: 2014
Place of publication: Jakarta
Language: ind
Number of pages: 104
ISBN-13: 9789797098025
Notes: Includes bibliographical references (pages 100-101) and index.

In Indonesian.