Webb, E. J., Campbell, D. T., Schwartz, R. D., & Sechrest, L. (1966). Unobtrusive measures: Nonreactive research in the social sciences. Rand McNally.
Chicago Style (17th ed.) CitationWebb, Eugene J., Donald T. Campbell, Richard D. Schwartz, and Lee Sechrest. Unobtrusive Measures: Nonreactive Research in the Social Sciences. Chicago: Rand McNally, 1966.
MLA citiranjeWebb, Eugene J., et al. Unobtrusive Measures: Nonreactive Research in the Social Sciences. Rand McNally, 1966.
Opozorilo: Ti citati niso vedno 100% točni.