Digital concepts ...

MLA

Bell, Leonard W. and Inc. Tektronix. Digital concepts ... [First edition]. [Beaverton, Or.] : Tektronix, inc., [1970, c1968].

APA

Bell, L. & Tektronix, I. (1970). Digital concepts ... [First edition]. [Beaverton, Or.] : Tektronix, inc..

Chicago

Bell, Leonard W. and Inc. Tektronix. Digital concepts ... [First edition]. [Beaverton, Or.] : Tektronix, inc., [1970, c1968].