Gaya APA

API, ., Institute), (, P. (1997). Pipeline Maintenance Welding Practice; API Recomended Practice 1107 (1997). : Washington DC : API Publisher,.

Gaya MLA

API, ., Institute), (American, Petroleum. "Pipeline Maintenance Welding Practice; API Recomended Practice 1107". 1997 : Washington DC : API Publisher,, 1997. Text.