O'Neill, P. G. (1973). Essential Kanji: 2,000 basic Japanese characters systematically arranged for learning and reference. Weatherhill.
Chicago-viite (17. p.)O'Neill, P. G. Essential Kanji: 2,000 Basic Japanese Characters Systematically Arranged for Learning and Reference. Boston: Weatherhill, 1973.
MLA-viite (9. p.)O'Neill, P. G. Essential Kanji: 2,000 Basic Japanese Characters Systematically Arranged for Learning and Reference. Weatherhill, 1973.
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