Lua APA (7ú heag.)

Howell, D. C. (1995). Fundamental statistics for the behavioral sciences (3rd.ed.). Duxbury.

Lua i Stíl Chicago (17ú heag.)

Howell, David C. Fundamental Statistics for the Behavioral Sciences. 3rd.ed. Belmont: Duxbury, 1995.

Lua MLA (9ú heag.)

Howell, David C. Fundamental Statistics for the Behavioral Sciences. 3rd.ed. Duxbury, 1995.

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