DeVos, R. M. (2014). Simply rich: Life and lessons from the cofounder of Amway: a memoir. New York, NY: Howard Books.
शिकागो स्टाइल उद्धरणDeVos, Richard M. Simply Rich: Life and Lessons From the Cofounder of Amway: A Memoir. New York, NY: Howard Books, 2014.
एमएलए उद्धरणDeVos, Richard M. Simply Rich: Life and Lessons From the Cofounder of Amway: A Memoir. New York, NY: Howard Books, 2014.
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