Johnson, D. A. (2018). Diploma mill: The rise and fall of Dr. John Buchanan and the Eclectic Medical College of Pennsylvania. Kent, Ohio: The Kent State University Press.

Johnson, David A. Diploma Mill: The Rise and Fall of Dr. John Buchanan and the Eclectic Medical College of Pennsylvania. Kent, Ohio: The Kent State University Press, 2018.

Johnson, David A. Diploma Mill: The Rise and Fall of Dr. John Buchanan and the Eclectic Medical College of Pennsylvania. Kent, Ohio: The Kent State University Press, 2018.