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
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 (2023) Modul Teknis Bagi Administrator Platform Ubaya Vocational Interest Inventory (UVII) Pada Disnakertrans Jawa Timur. EC00202318453.
Universitas Surabaya (2021) Modul Pelatihan Psychocare Dengan Pendekatan Expectancy Theory Motivation. EC00202113128.