(2000). McGraw-Hill yearbook of science and technology 2001. McGraw-Hill Book Company.
Dyfyniad Arddull ChicagoMcGraw-Hill Yearbook of Science and Technology 2001. New York: McGraw-Hill Book Company, 2000.
Dyfyniad MLAMcGraw-Hill Yearbook of Science and Technology 2001. McGraw-Hill Book Company, 2000.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.