Gaya APA
WIDIANTO, H. (2011).
Human path after Sangiran era (Ed. 1st).
[s.l ]:
Conservation Office of Sangiran Early Man Site.
Gaya MLA
WIDIANTO, Harry.
"Human path after Sangiran era".
Ed. 1st
[s.l ]:
Conservation Office of Sangiran Early Man Site,
2011.
Buku.