Παραπομπή σε μορφή APA (7η εκδ.)

Heshmat, Y. (2009). Determinants of happiness and life satisfaction in Egypt: An empirical study using the world values survey - Egypt 2008. information and decision support center.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Heshmat, Yasmin. Determinants of Happiness and Life Satisfaction in Egypt: An Empirical Study Using the World Values Survey - Egypt 2008. cairo: information and decision support center, 2009.

Παραπομπή σε μορφή MLA (9th εκδ.)

Heshmat, Yasmin. Determinants of Happiness and Life Satisfaction in Egypt: An Empirical Study Using the World Values Survey - Egypt 2008. information and decision support center, 2009.