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Diakses pada 04 Februari 2021Cleveland Clinic. https://health.clevelandclinic.org/how-to-break-bad-habits/
Diakses pada 04 Februari 2021Healthline. https://www.healthline.com/health/how-long-does-it-take-to-break-a-habit#tips-and-tricks
Diakses pada 04 Februari 2021