Estados Unidos. Department of the Interior. Office of Communications = United States. Department of the Interior. Office of Communications, Morton, R. C. B., Vosburgh, J. R., Willette, L., Baldacchino, N., Wilson, T., Sande, V., Baldwin, E. J., Carroll, J., Gillette, E., Morrow, D., Rhinehart, J., DeRocco, T., Fiske, R. S., Orth, D. J., Miesch, A. T., Price, B., Jordan, P. R., Cole, A., Corwin, G., Eaton, G. P., Bender, E. M., Lanman, C. F., Whitaker, R. D., Forrester, F., Schausten, D. W., Lee, J., Douglas, W. J., Whiting, C. S., Robinson, J., Sharpe, F. P., Geunther, H. R., Bacon, J., Wood Loveless, K., Herndon, P. C., Hostetter, R. D., Meier, M. F., MacDonald, W. R., Leedy, D. L., Ayres, M. E., Hall, B., Burgess, J., DeLong, M., Midgley, G. W., Hart, R. G., DeWitt, J., & Saults, D. (1973). In touch with people. Washington, D.F: United States Goverment Printing Office.

Estados Unidos. Department of the Interior. Office of Communications = United States. Department of the Interior. Office of Communications, et al. In Touch With People. Washington, D.F: United States Goverment Printing Office , 1973.