APA (7th ed.) Citation
(1980). Question and answer book C. Ultrasonic test method. Levels I, II, III. [s.n.].
Chicago Style (17th ed.) Citation
Question and Answer Book C. Ultrasonic Test Method. Levels I, II, III. [s.l.]: [s.n.], 1980.
MLA (9th ed.) Citation
Question and Answer Book C. Ultrasonic Test Method. Levels I, II, III. [s.n.], 1980.
Warning: These citations may not always be 100% accurate.