Παραπομπή APA

(1970). Social security programs throughout the world 1973. Washington, D.C: Government Printing Office.

Παραπομπή Chicago Style

Social Security Programs Throughout the World 1973. Washington, D.C: Government Printing Office, 1970.

Παραπομπή MLA

Social Security Programs Throughout the World 1973. Washington, D.C: Government Printing Office, 1970.

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