Gaya APA

Widiyanto, G. (2014). Development of ultrasonogrphy for downhole well inspection (Oil & Gas Vol.37, Numb.2 August 2014) (Vol.37, Numb.2 August 2014). Jakarta: LEMIGAS.

Gaya MLA

Widiyanto, Gathuk. "Development of ultrasonogrphy for downhole well inspection (Oil & Gas Vol.37, Numb.2 August 2014)". Vol.37, Numb.2 August 2014 Jakarta: LEMIGAS, 2014. Artikel Ilmiah Nasional.