International encyclopedia of the social sciences : volume 13 & 14
edited by David L. Sills
Macmillan and The Free Press, 1968
 Buku Referensi
Luthans, Fred, author
Social issues in business: a text with current readings and cases
Macmillan, 1976
 Buku Teks
Current Issues in social security law /edited by Julian Disney
Centre for International and Public Law, Australian National University, 1994
 Buku Teks
Current issues in the phonetic sciences proceedings of the IPS-77 congress, Miami Beach, Florida, 17-19th December 1977 editor by and
Amsterdam John Benjamins B.V. 1979
 Buku Teks
International co-operation in science and in social sciences as reflected in multinational papers indexed in SCI and SSCI
 Artikel Jurnal
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