APA-čujuhus (7. p.)
Ruddock, R. (1980). Perspectives on adult education: Department of adult ..........
Chicago-čujuhus (17. p.)
Ruddock, Ralph. Perspectives on Adult Education: Department of Adult .......... Direct Printers, 1980.
MLA-čujuhus (9. p.)
Ruddock, Ralph. Perspectives on Adult Education: Department of Adult .......... 1980.
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