APA-čujuhus (7. p.)
Organization for Economic Cooperation and Development (OECD). (1969). Development of secondary education: Trends and implications.
Chicago-čujuhus (17. p.)
Organization for Economic Cooperation and Development (OECD). Development of Secondary Education: Trends and Implications. 1969.
MLA-čujuhus (9. p.)
Organization for Economic Cooperation and Development (OECD). Development of Secondary Education: Trends and Implications. 1969.
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