Dick, Steven J.
The biological universe: the twentieth-century extraterrestrial life debate and the limits of science
Cambridge University Press, 1996
 Buku Teks
SCI Science Citation Index 1980 annual : volume 14, SCI Journal Citation Reports : a bibliometric analysis of science journals in the ISI data base
Institute fo Scientific Information, 1981
 Buku Referensi
SCI Science Citation Index 1980 annual : part 1 citaion index A-Coat
Institute fo Scientific Information, 1981
 Buku Referensi
SCI Science Citation Index 1980 annual : part 3 citaion index Gree-Kuwa
Institute fo Scientific Information, 1981
 Buku Referensi
SCI Science Citation Index 1980 annual : part 5 citaion index Pady-Stad
Institute fo Scientific Information, 1981
 Buku Referensi