Flick, U. (2018). An Introduction to Qualitative Research. 6th edition, SAGE Publications Ltd. [https://uk.sagepub.com/en-gb/eur/an-introduction-to-qualitative-research/book261109]
Fontana, A., & Frey, J. (1994). Interviewing: The Art of Science. In N. Denzin, & Y. Lincoln (Eds.), Handbook of Qualitative Research (pp. 361-376). Thousand Oaks, CA: Sage Publication, Inc. [http://jan.ucc.nau.edu/~pms/cj355/readings/fontana%26frey.pdf]
Kvale, S. (2007): Doing Interviews. The SAGE Qualitative Research Kit. [https://methods.sagepub.com/book/doing-interviews]
Kvale, S. (1996). InterViews: An Introduction to Qualitative Research Interviewing. Thousand Oaks, CA: Sage Publication, Inc. [https://www.academia.edu/32335020/Interviews_An_Introduction_to_Qualitative_Research_Interviewing]
The definitive book in the CA field on this might be Clayman & Heritage (2002) The News Interview: Journalists and Public Figures on the Air. CUP. Under Studies in Interactional Sociolinguistics series, number 16. Clayman has written a lot about this.