Tebbens, Henricus Duintjer, 1943-, author
Sijthoff & Noordhoff, 1980
Buku Teks
Jacob, Herbert, 1933-, author
Yale University Press, 1996
Buku Teks
OECD, 2001
Buku Teks
Clinard, Marshall B. (Marshall Barron), author
John Wiley & Sons, 1973
Buku Teks
Cook, Ian Gillespie, author
Springer, 2012
eBooks