Beatty, L. F. (1981). Still pictures. Educational Technology Publications.
Lua i Stíl Chicago (17ú heag.)Beatty, LaMond F. Still Pictures. Englewood Cliffs, N.J.: Educational Technology Publications, 1981.
Lua MLA (8ú heag.)Beatty, LaMond F. Still Pictures. Educational Technology Publications, 1981.
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