1981 Smith, Ralph Lee, "The Wired Nation", The Nation magazine, May 18, 1970 Smith, Ralph Lee, The Wired Nation; Cable TV: the electronic communications highway.
1981 Smith, Ralph Lee, "The Wired Nation", The Nation magazine, ngày 18 tháng 5 năm 1970 Smith, Ralph Lee, The Wired Nation; Cable TV: the electronic communications highway.