توثيق جمعية علم النفس الأمريكية APA (الطبعة السابعة)
(Jun 19, 2008). United States v. Cengage Learning Holdings I, L.P., Cengage Learning Holdings II L.P., Cengage Learning, Inc., Apax/Tl Holdings, LLC, Education Media and Publishing Group Limited, and Houghton Mifflin Harcourt Publishing Company; Proposed Final Judgment and Competitive Impact Statement. The Federal Register / FIND.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)
"United States V. Cengage Learning Holdings I, L.P., Cengage Learning Holdings II L.P., Cengage Learning, Inc., Apax/Tl Holdings, LLC, Education Media and Publishing Group Limited, and Houghton Mifflin Harcourt Publishing Company; Proposed Final Judgment and Competitive Impact Statement." The Federal Register / FIND Jun 19, 2008.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)
"United States V. Cengage Learning Holdings I, L.P., Cengage Learning Holdings II L.P., Cengage Learning, Inc., Apax/Tl Holdings, LLC, Education Media and Publishing Group Limited, and Houghton Mifflin Harcourt Publishing Company; Proposed Final Judgment and Competitive Impact Statement." The Federal Register / FIND, Jun 19, 2008.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.