Erhorn, C., & Stark, J. (1994). Competing by design: Creating value and market advantage in new product development /Craig Erhorn and John Stark. Omneo.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Erhorn, Craig, و John Stark. Competing by Design: Creating Value and Market Advantage in New Product Development /Craig Erhorn and John Stark. Essex Junction, VT: Omneo, 1994.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Erhorn, Craig, و John Stark. Competing by Design: Creating Value and Market Advantage in New Product Development /Craig Erhorn and John Stark. Omneo, 1994.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.