https://www.youtube.com/watch/ZAkrP9bFXzA
Further readings:
1. Collecting primary data through observation (Saunders et al., 2016), 7th edition, Page 354
2. https://www.researchgate.net/publication/345319771_Participant_Observation_and_the_Ethics_of_Social_Research
3. Margaret Andrews; Peter Reece Jones (1996). Problem-based learning in an undergraduate nursing programme: a case study. , 23(2), 357–365. doi:10.1111/j.1365-2648.1996.tb02679.x
4.https://measuringu.com/observation-role/
