BIBCYT http://bibcyt.ucla.edu.ve/cgi-win/be_alex.exe?Ultimo&Nombrebd=BIBCYT UCLA - Biblioteca de Ciencias y Tecnologia Felix Morales Bueno Lightner, Nancy J. lightnernj@appstate.edu P Principal Evaluating E-Commerce Functionality with a Focus on Customer Service Vol: 47 pp. 88-92; 28 cm. ; il