Fatherly
https://www.fatherly.com/health-science/how-to-last-longer-during-sex-build-stamina/
Diakses 12 Agustus 2020Helathline
https://www.healthline.com/health/male-sexual-performance#kick-bad-habits
https://www.healthline.com/health/male-sexual-performance#getting-more-help
Diakses 12 Agustus 2020Everyday Health
https://www.everydayhealth.com/mens-health/exercises-to-improve-your-sex-life.aspx
Diakses 12 Agustus 2020