Arabstoday, Arabstoday Egyptian Thinker Dead at 62; Arabstoday; Arabstoday. "Ibrahim El-Fiky dies in fire". www.arabstodayen (in Arabic). Retrieved August 3, 2020.{{cite web}}: CS1 maint: numeric names: authors list (link)
"Figure 8.5. Around 13% of people report experiencing more negative than positive feelings". doi:10.1787/888934081777. {{cite journal}}: Cite journal requires |journal= (help)