Howland, R. H. (1975). Técnica de venta. El Ateneo.
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Chicago Style (17th ed.) Citation
Howland, Richard H. Técnica De Venta. Buenos Aires: El Ateneo, 1975.
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MLA引文
Howland, Richard H. Técnica De Venta. El Ateneo, 1975.
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警告：這些引文格式不一定是100％准確.