توثيق جمعية علم النفس الأمريكية APA (الطبعة السابعة)

Keep, E. (2009). The limits of the possible: Shaping the learning and skills landscape through a shared policy narrative. ESRC Centre on Skills, Knowledge and Organisational Performance (SKOPE).

توثيق أسلوب شيكاغو (الطبعة السابعة عشر)

Keep, E. The Limits of the Possible: Shaping the Learning and Skills Landscape Through a Shared Policy Narrative. ESRC Centre on Skills, Knowledge and Organisational Performance (SKOPE), 2009.

توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)

Keep, E. The Limits of the Possible: Shaping the Learning and Skills Landscape Through a Shared Policy Narrative. ESRC Centre on Skills, Knowledge and Organisational Performance (SKOPE), 2009.