(1994). 100 years of Pithecanthropus: The Homo erectus problem. Forschungsinst. Senckenberg.
Chicago Style (17th ed.) Citation100 Years of Pithecanthropus: The Homo Erectus Problem. Frankfurt am Main: Forschungsinst. Senckenberg, 1994.
MLA (9th ed.) Citation100 Years of Pithecanthropus: The Homo Erectus Problem. Forschungsinst. Senckenberg, 1994.
Warning: These citations may not always be 100% accurate.