The Europa year book 1929 : an annual survey of economic and social conditions
edited by Michael Farbman
Europa Publications, 1929
 Buku Teks SO
Economic and social survey of Asia and the Pacific 1992 part one recent Economic and Social Developments
by Economic and social commission for Asia and the Pacific
United Nations, 1993
 Buku Teks SO
Rural diversification under varying geographical conditions: an explanatory survey of four clusters of small-scale industry in Bantul District, Special Region of Yogyakarta
 Artikel Jurnal
Einstein, Albert, 1879-1955
Relativity : the special and the general theory
Methuen , 1954
 Buku Teks SO
Einstein, Albert, 1879-1955
Relativity : the special and the general theory
Routledge, 2014
 Buku Teks SO