APA (7th ed.) Citation

Graf, R. F. (1960). Using and understanding probes ([1st ed.].). H. W. Sams.

Chicago Style (17th ed.) Citation

Graf, Rudolf F. Using and Understanding Probes. [1st ed.]. Indianapolis: H. W. Sams, 1960.

MLA (9th ed.) Citation

Graf, Rudolf F. Using and Understanding Probes. [1st ed.]. H. W. Sams, 1960.