V. E. Arijaya and D. T. S.E., M.M, “ANALYSIS OF THE EFFECT OF PROMOTION FOCUS VARIABLES AND PREVENTION FOCUS ON IMPULSE BUYING TENDENCY VARIABLES: EMPIRICAL STUDY ON SHOPEE: ANALISIS PENGARUH VARIABEL FOKUS PROMOSI DAN FOKUS PENCEGAHAN TERHADAP VARIABEL IMPULSE BUYING TENDENCY: STUDI EMPIRIS PADA SHOPEE”, PERFORMA, vol. 7, no. 5, pp. 595–607, Dec. 2022.