Healthline. https://www.healthline.com/health/healthy-sex/how-to-give-a-blowjob
Diakses pada 27 Desember 2020Healthline. https://www.healthline.com/health/mens-health/smelly-penis
Diakses pada 27 Desember 2020CDC. https://www.cdc.gov/std/healthcomm/stdfact-stdriskandoralsex.htm
Diakses pada 27 Desember 2020