Gaya APA

Ashbough, N. (1979). Evaluation of a Crack-Growth Gage for Monitoring Possible Structure Fatigue-Crack Growth . : ASTM.

Gaya MLA

Ashbough, N.E.. "Evaluation of a Crack-Growth Gage for Monitoring Possible Structure Fatigue-Crack Growth". : ASTM, 1979. Computer Software.