APA (7 वां संस्करण) प्रशस्ति पत्र
Sims, W. S., & Armstrong, B. (2015). 21st century Sims: Innovation, education, and leadership for the modern era. Naval Institute Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र
Sims, William Sowden, और Benjamin Armstrong. 21st Century Sims: Innovation, Education, and Leadership for the Modern Era. Annapolis, Maryland: Naval Institute Press, 2015.
एमएलए (9वां संस्करण) प्रशस्ति पत्र
Sims, William Sowden, और Benjamin Armstrong. 21st Century Sims: Innovation, Education, and Leadership for the Modern Era. Naval Institute Press, 2015.
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