Gaya APA

Insitute, A, P. (1997). Recomended practice for classification for electrical installation at petroleum facilities classified as class I, div. 1 and Div. 2 (1997). : Washington : API Publishing Service,.

Gaya MLA

Insitute, American, Petroleum. "Recomended practice for classification for electrical installation at petroleum facilities classified as class I, div. 1 and Div. 2". 1997 : Washington : API Publishing Service,, 1997. Text.