References
R. D. Schwarz
The use of archival sources in social research
1984
with Webb E. J., Campbell D. T., Sechrest L.
in: Sociological research methods, Basingstoke : Palgrave Macmillan
1984
with Webb E. J., Campbell D. T., Sechrest L.
in: Sociological research methods, Basingstoke : Palgrave Macmillan