Tillery, B. W. (1993). Physical science (2nd ed.). Wm. C. Brown.
Lua i Stíl Chicago (17ú heag.)Tillery, Bill W. Physical Science. 2nd ed. Dubuque, Iowa: Wm. C. Brown, 1993.
Lua MLA (9ú heag.)Tillery, Bill W. Physical Science. 2nd ed. Wm. C. Brown, 1993.
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