Dyfyniad APA

Beyer,Robert T, & Stephen V.Letcher. (1969). Physical Ultrasonics. AP.

Dyfyniad Arddull Chicago

Beyer,Robert T, and Stephen V.Letcher. Physical Ultrasonics. New York: AP, 1969.

Dyfyniad MLA

Beyer,Robert T, and Stephen V.Letcher. Physical Ultrasonics. AP, 1969.

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