Dyfyniad APA

Spiegel,, M. R., & Stephens,, L. Theory and problems statistics (3.). Tata McGraw-Hill publishing Company Limited.

Dyfyniad Arddull Chicago

Spiegel,, Murray R., and Larry.J Stephens. Theory and Problems Statistics. 3. New Delhi: Tata McGraw-Hill publishing Company Limited.

Dyfyniad MLA

Spiegel,, Murray R., and Larry.J Stephens. Theory and Problems Statistics. 3. Tata McGraw-Hill publishing Company Limited.

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