APA (7 वां संस्करण) प्रशस्ति पत्र

DELL MICHAEL. (2010). DIRECT FROM DELL: STRATEGIES THAT REVOLUTIONIZED AN INDUSTRY (1ST.). PROFILE BOOKS LTD.

शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र

DELL MICHAEL. DIRECT FROM DELL: STRATEGIES THAT REVOLUTIONIZED AN INDUSTRY. 1ST. LONDON: PROFILE BOOKS LTD, 2010.

एमएलए (9वां संस्करण) प्रशस्ति पत्र

DELL MICHAEL. DIRECT FROM DELL: STRATEGIES THAT REVOLUTIONIZED AN INDUSTRY. 1ST. PROFILE BOOKS LTD, 2010.