Rosero Bixby, L. (2008). The exceptionally high life expectancy of Costa Rican nonagenarians.
シカゴスタイル引用形Rosero Bixby, Luis. The Exceptionally High Life Expectancy of Costa Rican Nonagenarians. 2008.
MLA引用形式Rosero Bixby, Luis. The Exceptionally High Life Expectancy of Costa Rican Nonagenarians. 2008.
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