Dyfyniad APA

Hatt, W. K., & Scofield, H. H. (1913). Laboratory manual of testing materials. McGraw-Hill book Co..

Dyfyniad Arddull Chicago

Hatt, William Kendrick, and Herbert Henry Scofield. Laboratory Manual of Testing Materials. New York [etc.]: McGraw-Hill book Co., 1913.

Dyfyniad MLA

Hatt, William Kendrick, and Herbert Henry Scofield. Laboratory Manual of Testing Materials. McGraw-Hill book Co., 1913.

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