Reference

DELIVERY CHANNELS WITHIN ORGANIZATIONS                                                             6

Reference

http://open.lib.umn.edu/principlesmanagement/chapter/12-6-communication-channels/

https://www.linkedin.com/pulse/20140718235719-13146364-internal-communication-channels-for-today-s-workplace

http://cdn2.hubspot.net/hub/301060/file-551356727-pdf/Whitepapers_PDF/Effective_ICv2.pdf?t=1393497886000

https://saylordotorg.github.io/text_organizational-behavior-v1.1/s12-04-different-types-of-communicati.html

http://launchworkplaces.com/why-is-face-to-face-communication-in-the-workplace-important/

https://contentcritical.com/business-communication-challenges/

http://smallbusiness.chron.com/determine-appropriate-communication-channel-24098.html