Dyfyniad APA

(2000). McGraw-Hill yearbook of science and technology 2001. McGraw-Hill Book Company.

Dyfyniad Arddull Chicago

McGraw-Hill Yearbook of Science and Technology 2001. New York: McGraw-Hill Book Company, 2000.

Dyfyniad MLA

McGraw-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.