APA
Karl Jorg Langenberg, Mayer, . (2012). Ultra Sonic Non Destructive Testing of Materials. London: CRC.
Chicago
Karl Jorg Langenberg, Mayer, . 2012. Ultra Sonic Non Destructive Testing of Materials. London: CRC.
Harvard
Karl Jorg Langenberg, Mayer, . (2012). Ultra Sonic Non Destructive Testing of Materials. London: CRC.
MLA
Karl Jorg Langenberg, Mayer, . Ultra Sonic Non Destructive Testing of Materials. London: CRC. 2012.