Meier, B. (1998). Memos show tobacco firms were obsessed with nicotine. Today.
Cita Chicago (17th ed.)Meier, Barry. "Memos Show Tobacco Firms Were Obsessed with Nicotine." Today 1998.
Cita MLA (9th ed.)Meier, Barry. "Memos Show Tobacco Firms Were Obsessed with Nicotine." Today, 1998.
Atenció: Aquestes cites poden no estar 100% correctes.