APA (7th ed.) Zitazioa
David, S. A., Boniwell, I., & Ayers, A. C. The Oxford Handbook of Happiness. Oxford University.
Chicago Style (17th ed.) Zitazioa
David, Susan A., Ilona Boniwell, eta Amanda Conley Ayers. The Oxford Handbook of Happiness. Oxford, Inglaterra: Oxford University.
MLA (9th ed.) Zitazioa
David, Susan A., et al. The Oxford Handbook of Happiness. Oxford University.
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