APA (7 वां संस्करण) प्रशस्ति पत्र

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).

शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र

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.

एमएलए (9वां संस्करण) प्रशस्ति पत्र

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.

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