Applied research design: A practical guide. Bickman L. TE Hedrick, L Bickman, DJ Rog - 1993 - books.google.com GSID: AxIV45aFSeoJ
Communication research: Asking questions, finding answers. Keyton J. J Keyton - 2006 - academia.edu GSID: Hbp5fwMRTdAJ
Selecting the appropriate study design for your research: Descriptive study designs. Omair A. A Omair - Journal of health specialties, 2015 - researchgate.net GSID: 0H-18uqjmooJ
Readings in virtual research ethics: Issues and controversies. [No authors listed] EA Buchanan - 2004 - books.google.com GSID: u_7ZgsVuc7cJ