Lua APA (7ú heag.)

HITCHINGS, B. (1975). Marketing As A Cybernatic System Bradley Hitchings. Alexander Hamilton Institut.

Lua i Stíl Chicago (17ú heag.)

HITCHINGS, Bradley. Marketing As A Cybernatic System Bradley Hitchings. Alexander Hamilton Institut, 1975.

Lua MLA (8ú heag.)

HITCHINGS, Bradley. Marketing As A Cybernatic System Bradley Hitchings. Alexander Hamilton Institut, 1975.

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