APA

Parrott R. W., Tveit E. & Tveit E.Onshore, offshore use of high-pressure pipeline isolation plugs for operating pipeline construction, maintenance. : .

Chicago

Parrott Ralph W, Tveit Edd and Tveit Edd.Onshore, offshore use of high-pressure pipeline isolation plugs for operating pipeline construction, maintenance. : .

Harvard

Parrott R. W., Tveit E. and Tveit E.Onshore, offshore use of high-pressure pipeline isolation plugs for operating pipeline construction, maintenance. : .

MLA

Parrott Ralph W, Tveit Edd and Tveit Edd.: . .