Warner, W. L., Riper, P. P. v., Martin, N. H., & Collins, O. F. (1963). The american federal executive: A study of the social and personal characteristics of the civilian and military leaders of the United States Federal Government. Yale University Press.
Cita Chicago (17th ed.)Warner, W. Lloyd, Paul P. van Riper, Norman H. Martin, i Orvis F. Collins. The American Federal Executive: A Study of the Social and Personal Characteristics of the Civilian and Military Leaders of the United States Federal Government. New Haven: Yale University Press, 1963.
Cita MLA (9th ed.)Warner, W. Lloyd, et al. The American Federal Executive: A Study of the Social and Personal Characteristics of the Civilian and Military Leaders of the United States Federal Government. Yale University Press, 1963.