APA (7th ed.) Citation

Bertelsen, A. F., & Thorsen, L. K. (1981). An experimental investigation of oscillatory viscous flow in pipe bends.

Chicago Style (17th ed.) Citation

Bertelsen, Arnold F., and Leif K. Thorsen. An Experimental Investigation of Oscillatory Viscous Flow in Pipe Bends. Oslo, 1981.

MLA (9th ed.) Citation

Bertelsen, Arnold F., and Leif K. Thorsen. An Experimental Investigation of Oscillatory Viscous Flow in Pipe Bends. 1981.

Warning: These citations may not always be 100% accurate.