R.A. Freitas, The Legal Rights of Extraterrestrials, Analog Science Fiction/Science Fact (1977) 54-67 (April)
Andrew G. Haley, Metalaw Chapter from Space Law and Government, Appleton Century Crofts, New York, 1963 [online link to entire book text!]
Andrew G. Haley, Metalaw Chapter from Space Law and Government, Appleton Century Crofts, New York, 1963 [online link to entire book text!]