Dyfyniad APA

(1990). Annual digest of statistics 1990. [Tokyo]: Yamaichi Research Institute.

Dyfyniad Arddull Chicago

Annual Digest of Statistics 1990. [Tokyo]: Yamaichi Research Institute, 1990.

Dyfyniad MLA

Annual Digest of Statistics 1990. [Tokyo]: Yamaichi Research Institute, 1990.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.