Schultz, H., & Bowlby, S. (2011). Onward: How starbucks fought for its life without losing its soul (Unabridged.). HighBridge Audio.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Schultz, Howard, و Stephen Bowlby. Onward: How Starbucks Fought for Its Life Without Losing Its Soul. Unabridged. Prince Frederick: HighBridge Audio, 2011.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Schultz, Howard, و Stephen Bowlby. Onward: How Starbucks Fought for Its Life Without Losing Its Soul. Unabridged. HighBridge Audio, 2011.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.