%0 Journal Article %T Unobservable Variables in Structural Equation Models with an Application in Industrial Selling %A Aaker, David A. %A Bagozzi, Richard P. %J Journal of Marketing Research %V 16 %N 2 %P 147-158 %@ 0022-2437 %D 1979-05-01 %I SAGE Publications %~ DeepDyve