Andrea, Kelvin and Muttaqin, Darmawan (2024) Role of Self-efficacy as a Mediator in The Relationship Between Parental Restriction and The Quality of Cross-Ethnic Friendships. Psychological Research on Urban Society, 7 (1). pp. 1-11. ISSN 2615-8582 ; p-ISSN 2620-3960
Universitas Surabaya (2023) Modul Teknis Bagi Administrator Platform Ubaya Vocational Interest Inventory (UVII) Pada Disnakertrans Jawa Timur. EC00202318453.
Angelica, Karina and Sukamto, Monique Elizabeth and Chandra, Clara Citra and Andrea, Kelvin (2022) Coping strategies to predict the psychological well-being of college students during the COVID-19 pandemic. Humanitas: Indonesian Psychological Journal, 19 (2). pp. 62-74. ISSN 2598-6368(online); 1693-7236(print)
Universitas Surabaya (2021) Modul Pelatihan Psychocare Dengan Pendekatan Expectancy Theory Motivation. EC00202113128.