1. Deputy for Industrial and Institutional Development of the Ministry of Tourism, Guidelines for the Implementation of Halal Tourism. Ministry of Tourism Jakarta, 1 (2019)
2. Interview with Semarang City Culture and Tourism Office (May, 2021)
3. Indonesia Portal Informasi (2021) Retrieved from: www.indonesia.go.id
4. Interview with the Semarang City Population and Civil Registration Office (May, 2021)