APA (7th ed.) Citation

Nordin, C. F., & Pérez-Hernández, D. (1989). Sand waves, bars, and wind-blown sands of the Río Orinoco, Venezuela and Colombia. U.S. G.P.O..

Chicago Style (17th ed.) Citation

Nordin, Carl F., and David Pérez-Hernández. Sand Waves, Bars, and Wind-blown Sands of the Río Orinoco, Venezuela and Colombia. Washington, DC: U.S. G.P.O., 1989.

MLA (9th ed.) Citation

Nordin, Carl F., and David Pérez-Hernández. Sand Waves, Bars, and Wind-blown Sands of the Río Orinoco, Venezuela and Colombia. U.S. G.P.O., 1989.