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Diakses pada 19 Juli 2020Psychology Today. https://www.psychologytoday.com/us/blog/hope-relationships/201605/the-power-positive-self-talk
Diakses pada 19 Juli 2020Verywell Mind. https://www.verywellmind.com/how-to-use-positive-self-talk-for-stress-relief-3144816
Diakses pada 19 Juli 2020