Wallace, W., & Christesen, R. J. (1986). Ebasco Services Incorporated: The saga of electric power : meeting the challenge of change. New York: Newcomen Society of the United States.

Wallace, William, and Russell J. Christesen. Ebasco Services Incorporated: The Saga of Electric Power : Meeting the Challenge of Change. New York: Newcomen Society of the United States, 1986.

Wallace, William, and Russell J. Christesen. Ebasco Services Incorporated: The Saga of Electric Power : Meeting the Challenge of Change. New York: Newcomen Society of the United States, 1986.