Yentsch, C. S. and El-Baz, Farouk. 1979. "
Estimate of Total Reflectance from the Orinoco River Outflow." in
Apollo-Soyuz Test Project Summary Science Report. Volume II: Earth Observations and Photography, NASA SP-412, edited by El-Baz, Farouk and Warner, Delia M., 499–503. Washington, D. C.: NASA Scientific and Technical Information Branch.