Barnes-Svarney, P. L., & Svarney, T. E. (2006). The handy math answer book. Visible Ink Press.
Dyfyniad Arddull ChicagoBarnes-Svarney, Patricia L., and Thomas E. Svarney. The Handy Math Answer Book. Detroit, Michigan: Visible Ink Press, 2006.
Dyfyniad MLABarnes-Svarney, Patricia L., and Thomas E. Svarney. The Handy Math Answer Book. Visible Ink Press, 2006.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.