IEEE: Book [1] I. Glover and P. M. Grant, Digital communications. Harlow: Prentice Hall, 2010. . E-Journal article [1] R. Welling and L. White, “Measuring the Value of Corporate Web Sites,” Journal of Internet Commerce, vol. 5, no. 3, pp. 127–145, Oct. 2006, doi: 10.1300/j179v05n03_06.. APA: Book Glover, I., & Grant, P. M. (2010). Digital communications. Harlow: Prentice Hall. E-Journal article Welling, R., & White, L. (2006). Measuring the Value of Corporate Web Sites. Journal of Internet Commerce, 5(3), 127–145. https://doi.org/10.1300/j179v05n03_06 HARVARD: Book Glover, I. and Grant, P.M. (2010). Digital communications. Harlow: Prentice Hall. E-Journal article Welling, R. and White, L. (2006). Measuring the Value of Corporate Web Sites. Journal of Internet Commerce, 5(3), pp.127–145. doi:10.1300/j179v05n03_06.