Savage, S., & Krahn, i. F. (2009). Firmin (2a ed.). Planeta.
Chicago Style (17th ed.) CitationSavage, Sam, and il. Fernando Krahn. Firmin. 2a ed. Planeta, 2009.
MLA (8th ed.) CitationSavage, Sam, and il. Fernando Krahn. Firmin. 2a ed. Planeta, 2009.
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