Dyfyniad APA

Williams, R. S., & Homerberg, V. O. (1948). Principles of metallography (5th ed.). McGraw-Hill.

Dyfyniad Arddull Chicago

Williams, Robert S.,, and V. O. Homerberg. Principles of Metallography. 5th ed. N.Y.: McGraw-Hill, 1948.

Dyfyniad MLA

Williams, Robert S.,, and V. O. Homerberg. Principles of Metallography. 5th ed. McGraw-Hill, 1948.

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