Ingrassia, L. (2020). Billion dollar brand club: How Dollar Shave Club, Warby Parker, and other rebel startups are remaking what we buy (First edition.). Henry Holt and Company.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Ingrassia, Lawrence. Billion Dollar Brand Club: How Dollar Shave Club, Warby Parker, and Other Rebel Startups Are Remaking What We Buy. First edition. New York: Henry Holt and Company, 2020.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Ingrassia, Lawrence. Billion Dollar Brand Club: How Dollar Shave Club, Warby Parker, and Other Rebel Startups Are Remaking What We Buy. First edition. Henry Holt and Company, 2020.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.