MENCHIRS ROBERT S. (1991). MATURE MARKET: A GOLD MINE OF IDEAS FOR TAPPING THE 50+. PROBUS PUBLICATIONS.
芝加哥风格引文MENCHIRS ROBERT S. MATURE MARKET: A GOLD MINE OF IDEAS FOR TAPPING THE 50+. CHICAGO: PROBUS PUBLICATIONS, 1991.
MLA引文MENCHIRS ROBERT S. MATURE MARKET: A GOLD MINE OF IDEAS FOR TAPPING THE 50+. PROBUS PUBLICATIONS, 1991.
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