Lua APA (7ú heag.)
Крутская, С. В. Everyday English for Technical Students (Heat-Power Department): учебник.
Lua i Stíl Chicago (17ú heag.)Крутская, С. В. Everyday English for Technical Students (Heat-Power Department): учебник.
Lua MLA (8ú heag.)Крутская, С. В. Everyday English for Technical Students (Heat-Power Department): учебник.
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