Oxford scholarship online (Online service), Emmons, R. A., & McCullough, M. E. (2004). The psychology of gratitude. Oxford University Press. https://doi.org/10.1093/acprof:oso/9780195150100.001.0001
Chicago Style (17. basım) AtıfOxford scholarship online (Online service), Robert A. Emmons, ve Michael E. McCullough. The Psychology of Gratitude. Oxford: Oxford University Press, 2004. https://doi.org/10.1093/acprof:oso/9780195150100.001.0001.
MLA (9th ed.) AtıfOxford scholarship online (Online service), et al. The Psychology of Gratitude. Oxford University Press, 2004. https://doi.org/10.1093/acprof:oso/9780195150100.001.0001.
Uyarı: Bu alıntı herzaman %100 doğru olmayabilir..