Gaya APA
Widianto, H.
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[Sragen]:
Balai Pelestarian Situs Manusia Purba Sangiran.
Gaya MLA
Widianto, HARRY.
"Nafas Sangiran".
[Sragen]:
Balai Pelestarian Situs Manusia Purba Sangiran,
2011.
Buku.