James P. Spradley.
The Ethnographic Interview.
Wadsworth. 1979
The developmental research sequence
1 Locating an informant
2 Interviewing an Informant
3 Making an Ethnographic Record
4 Asking Descriptive Questions
5 Analyzing Ethnographic interviews
6 Making a Domain Analysis
7 Asking Structural Questions
8 Making a Taxonomic Analysis
9 Asking Contrast Questions
10 Making a Componential Analysis
11 Discovering Cultural Themes
12 Writing an Ethnography