Gaya APA

Warring, R. (1982). Hankbook of Valves, Piping and Pipelines (1982). Houston,Texas: Houston : Gulf Publishing Company,.

Gaya MLA

Warring, R.H.. "Hankbook of Valves, Piping and Pipelines". 1982 Houston,Texas: Houston : Gulf Publishing Company,, 1982. Text.