山田太郎から進化を続ける「名前例」 ['Example Names' Continue to Evolve beyond Yamada Tarō]. Excite Bit (ภาษาญี่ปุ่น). Excite News. 20 February 2012. สืบค้นเมื่อ 6 December 2012.
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The Expanded Dictionary of Japanese Family Names has 290,000 entries; some of these are distinguished by differences in pronunciation of the same characters, or by rare variant characters. 日本苗字大辞典、芳文館、1996, 7月発行