Bartlett M., DeSteno D. Gratitude and Prosocial Behavior: Helping When It Costs You // Psychological Science. April 2006. Vol. 17. No. 4. P. 319–325.
37
Slate. ‹›.
38
Clemens S., Barnes R. Support for Same-Sex Marriage at an All-Time High // Washington Post. April 23, 2015. ‹›.
39
The Knot,the #1Wedding Site,Releases 2014 Real Weddings Study Statistics // Market Watch. March 12, 2015. ‹›.
40
Francis A.M., Mialon H.M. A Diamond Is Forever and Other Fairy Tales: The Relationship between Wedding Expenses and Marriage Duration // Social Science Research Network. ‹›.