Please help me develop a summary!! Conclude some key points and focus on one or two points that are specifically important.

Dillman, D. A., Smyth, J. D., & Christian, L. M. (2014). Internet, phone, mail, and mixed- mode surveys: the tailored design method (4th edition). New York: John Wiley & Sons. Chapter 8 Telephone Questionnaires and Implementation Chapter 9 Web Questionnaires and Implementation Chapter 10 Mail Questionnaires and Implementation Groves, R. M., Fowler Jr, F. J., Couper, M. P., Lepkowski, J. M., Singer, E., & Tourangeau, R. (2011). Survey methodology. John Wiley & Sons. Chapter 9 Survey Interviewing

Thank you :)