Murray, [ p. 402], m/s. 402, di Buku Google; compare Nussbaum, "Hakuhō" at [ p. 280], m/s. 280, di Buku Google; Hakuhou jidai, JAANUS (Japanese Architecture and Art Net Users System), 2001; retrieved 24 Jan 2011.
NengoCalc (645) 大化 Taika, online conversion of Japanese dates into their Western equivalents; calculation is based on tables from Tsuchihashi and Zöllner.
