(1991). International Trinil Centennial Colloquium Surabaya November 18-21, 1991: Prehistoric man from east Java: Life and artifacts/ Pleistocene colonization of nothern Sahul: A hypothetical model/ Pola adaptasi Pithecantroups Erectus terhadap kondisi alam kala Plestosen di Jawa suatu kajian Paleografi dan Artefak Paleolitik. --.
Chicago Style (17th ed.) CitationInternational Trinil Centennial Colloquium Surabaya November 18-21, 1991: Prehistoric Man from East Java: Life and Artifacts/ Pleistocene Colonization of Nothern Sahul: A Hypothetical Model/ Pola Adaptasi Pithecantroups Erectus Terhadap Kondisi Alam Kala Plestosen Di Jawa Suatu Kajian Paleografi Dan Artefak Paleolitik. --, 1991.
MLA (8th ed.) CitationInternational Trinil Centennial Colloquium Surabaya November 18-21, 1991: Prehistoric Man from East Java: Life and Artifacts/ Pleistocene Colonization of Nothern Sahul: A Hypothetical Model/ Pola Adaptasi Pithecantroups Erectus Terhadap Kondisi Alam Kala Plestosen Di Jawa Suatu Kajian Paleografi Dan Artefak Paleolitik. --, 1991.