APA (7th ed.) Citation

Non-linear Systems. (1962). Digital voltmeters ([2d ed.). [publisher not identified].

Chicago Style (17th ed.) Citation

Non-linear Systems. Digital Voltmeters. [2d ed. Del Mar, Calif.: [publisher not identified], 1962.

MLA (9th ed.) Citation

Non-linear Systems. Digital Voltmeters. [2d ed. [publisher not identified], 1962.