APA Edition Citation

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

Chicago Edition Citation

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

MLA Edition Citation

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

Warning: These citations may not always be 100% accurate.