SHEPHERD, W. G. (1985). The Economics Of Industrial Organization William G. Shepherd. Prentice Hall.
Lua i Stíl Chicago (17ú heag.)SHEPHERD, William G. The Economics Of Industrial Organization William G. Shepherd. Prentice Hall, 1985.
Lua MLA (8ú heag.)SHEPHERD, William G. The Economics Of Industrial Organization William G. Shepherd. Prentice Hall, 1985.
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