Lua APA (7ú heag.)
Koenigswald, G. H. R. v., & Bullock, M. (1956). Meeting prehistoric man. Thames and Hudson.
Lua i Stíl Chicago (17ú heag.)
Koenigswald, G. H. R. von, agus Michael Bullock. Meeting Prehistoric Man. London ; New York: Thames and Hudson, 1956.
Lua MLA (9ú heag.)
Koenigswald, G. H. R. von, agus Michael Bullock. Meeting Prehistoric Man. Thames and Hudson, 1956.
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