Mah. State Board of Sec Ed. (1973). Chamber`s Encyclopedia Vol- XI. International Leaving Systems co. Ltd.
Chicago-viite (17. p.)Mah. State Board of Sec Ed. Chamber`s Encyclopedia Vol- XI. London: International Leaving Systems co. Ltd, 1973.
MLA-viite (9. p.)Mah. State Board of Sec Ed. Chamber`s Encyclopedia Vol- XI. International Leaving Systems co. Ltd, 1973.
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