Giddings, J. Calvin
Unified separation science
John Wiley & Sons, 1991
 Buku Teks SO
International encyclopedia of unified science; Volume 1
edited by Otto Neurath, Rudolf Carnap and Charles Morris
University of Chicago Press, 1955
 Buku Referensi
Quantum field theory and gravity : conceptual and mathematical advances in the search for a unified framework
edited by Felix Finster ... [and others]
Springer, 2012
 eBooks
Williams, Malcolm, 1953-
Science and social science: an introduction
Routledge, 2000
 Buku Teks SO
Hicks, John R.
The Social framework an introduction to economics
The Clarendon Press, 1952
 Buku Teks