Gaya APA

Mining, A, I, O., Engineers, P. (1961). Petroleum development & technology 1960. Volume 219 (1961). : Texas : SPE, Dallas,.

Gaya MLA

Mining, American, Inst., Of., Engineers, Petroleum. "Petroleum development & technology 1960. Volume 219". 1961 : Texas : SPE, Dallas,, 1961. Text.