Ardley, N. (1982). The family enyclopedia of science. Winward.
Lua i Stíl Chicago (17ú heag.)Ardley, Neil. The Family Enyclopedia of Science. England: Winward, 1982.
Lua MLA (9ú heag.)Ardley, Neil. The Family Enyclopedia of Science. Winward, 1982.
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