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