Dictionary of American biography :
complete index guide--volumes I-X, supplements 1-7.

APA Citation

American Council of Learned Societies. (1981). Dictionary of American biography: complete index guide--volumes I-X, supplements 1-7. New York: Published under the auspices of the American Council of Learned Societies [by] Scribner.

MLA Citation

American Council of Learned Societies. Dictionary of American Biography: Complete Index Guide--volumes I-X, Supplements 1-7. New York: Published under the auspices of the American Council of Learned Societies [by] Scribner, 1981.