Simmons, R. E. (1990). Communication Campaign Management A Systems Approach Robert E. Simmonsaaaa. Longman.
Lua i Stíl Chicago (17ú heag.)Simmons, Robert E. Communication Campaign Management A Systems Approach Robert E. Simmonsaaaa. Longman, 1990.
Lua MLA (8ú heag.)Simmons, Robert E. Communication Campaign Management A Systems Approach Robert E. Simmonsaaaa. Longman, 1990.
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