Assistance Duane Badger NDT. (2004). Liquid Penetrant Testing: Classroom Training Book (Personnel Training Publications Series) (Tái bản lần thứ 8.). American: The American Society for Nondestructive Testing.
Chicago ZitierstilAssistance Duane Badger NDT. Liquid Penetrant Testing: Classroom Training Book (Personnel Training Publications Series). Tái bản lần thứ 8. American: The American Society for Nondestructive Testing, 2004.
MLA ZitierstilAssistance Duane Badger NDT. Liquid Penetrant Testing: Classroom Training Book (Personnel Training Publications Series). Tái bản lần thứ 8. American: The American Society for Nondestructive Testing, 2004.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.