APA (7th ed.) Zitazioa

(1991). Core competencies and key skills for Missouri schools: Social studies/civics.

Chicago Style (17th ed.) Zitazioa

Core Competencies and Key Skills for Missouri Schools: Social Studies/civics. 1991.

MLA (9th ed.) Zitazioa

Core Competencies and Key Skills for Missouri Schools: Social Studies/civics. 1991.

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