Williams, S. A. (1978). Study guide to accompany physics, parts 1 & 2. Wiley.
Lua i Stíl Chicago (17ú heag.)Williams, S A. Study Guide to Accompany Physics, Parts 1 & 2. New York: Wiley, 1978.
Lua MLA (9ú heag.)Williams, S A. Study Guide to Accompany Physics, Parts 1 & 2. Wiley, 1978.
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