Gaya APA

Institute, A, P. (2016). Inspection Practices for Pressure Vessels (API Practice 572 fourth Edition) . Woshington: American Petroleum Institute (API).

Gaya MLA

Institute, American, Petroleum. "Inspection Practices for Pressure Vessels (API Practice 572 fourth Edition)". Woshington: American Petroleum Institute (API), 2016. Text.