Healthline. https://www.healthline.com/nutrition/benefits-of-broccoli
Diakses pada 13 Agustus 2019Medical News Today. https://www.medicalnewstoday.com/articles/266765.php
Diakses pada 13 Agustus 2019Taylor & Francis Online. https://www.tandfonline.com/doi/full/10.3109/09637486.2013.830084
Diakses pada 13 Agustus 2019