May, John D.
Social and political inquiry: a working introduction to the social sciences
Duxbury Press, 1972
 Buku Teks
Foundations for research: methods of inquiry in education and the social sciences
New jersey, 2004
 Buku Teks
Deutsch, Karl Wolfgang, 1912-1992
Nationalism and social communication : an inquiry into the foundations of nationality
Technology Press of the Massachusetts Institute of Technology, 1953
 Buku Teks
Deutsch, Karl Wolfgang, 1912-1992
Nationalism and social communication : an inquiry into the foundations of nationality
MIT Press, 1972
 Buku Teks
Allen, Carleton Kemp, Sir
Law and orders an inquiry into the natural and scope ofdelegated legislation and executive ...
Stevens & Sons Limited, 1956
 Buku Teks