Kelter, P. B. (1997). Study guide [for] chemistry (4th edition.). Boston: Houghton Mifflin.
Dyfyniad Arddull ChicagoKelter, Paul B. Study Guide [for] Chemistry. 4th edition. Boston: Houghton Mifflin, 1997.
Dyfyniad MLAKelter, Paul B. Study Guide [for] Chemistry. 4th edition. Boston: Houghton Mifflin, 1997.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.