People's Democracy (Northern Ireland). (1971). P.D. Christmas cards. People's Democracy (Northern Ireland).
Chicago-viite (17. p.)People's Democracy (Northern Ireland). P.D. Christmas Cards. Belfast: People's Democracy (Northern Ireland), 1971.
MLA-viite (8. p.)People's Democracy (Northern Ireland). P.D. Christmas Cards. People's Democracy (Northern Ireland), 1971.
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