Morris, Theresa. Qualitative secondary research : a step-by-step guide / Claire Largan, Theresa Morris. - 1st ed. - Thousand Oaks, CA ; London ; New Delhi : SAGE Publications, 2019. - xv, 350 p. ; 23 cm. ISBN: 9781526410986 (pbk.) LCCN: 2018958139 Dewey Class. No.: 001.42 / LAR