Lua APA (7ú heag.)

Webb, E. T. (1981). Nonreactive measures in the social sciences (2nd ed.). Houghton Mifflin.

Lua i Stíl Chicago (17ú heag.)

Webb, Eugene T. Nonreactive Measures in the Social Sciences. 2nd ed. Boston: Houghton Mifflin, 1981.

Lua MLA (9ú heag.)

Webb, Eugene T. Nonreactive Measures in the Social Sciences. 2nd ed. Houghton Mifflin, 1981.

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