Alba, M. (2015). Earl Martin Valencia: President & Co-Founder, IdeaSpace. Gadgets.
Chicago Style (17. basım) AtıfAlba, Maribelle. "Earl Martin Valencia: President & Co-Founder, IdeaSpace." Gadgets 2015.
MLA (9th ed.) AtıfAlba, Maribelle. "Earl Martin Valencia: President & Co-Founder, IdeaSpace." Gadgets, 2015.
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