APA (7th ed.) Zitazioa
Duvall, E. R. (1971). Family development (4th ed.). Lippincott.
Chicago Style (17th ed.) Zitazioa
Duvall, Evelyn Ruth. Family Development. 4th ed. Philadelphia: Lippincott, 1971.
MLA (9th ed.) Zitazioa
Duvall, Evelyn Ruth. Family Development. 4th ed. Lippincott, 1971.
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