Drabek, Thomas E.
Brown Company, 1974
Buku Teks
Leydesdorff, Loet, author
Universal, 2003
Buku Teks
edited by Michael Banton
Tavistock Publications, 1973
Buku Teks
Peltonen, Tuomo, author
Emerald, 2016
eBooks
Miles, Robert H.
Goodyear Publishing Company, 1980
Buku Teks