S3 (Doctor)
sejarah masa Hindia-Belanda dan budaya (history of the Dutch East Indies and culture)
Pariwisata di Hindia-Belanda 1891-1942 -Tourism in the Dutch East Indies 1891-1942 (KPG-EFEO Publisher, 2019), the book chapter ‘The Sound of the Tokkeh and the Tjitjak: The Representation of the Tokay Gekko and Common House Gekko in Dutch-Indies Travel Literature’ in Animals in Dutch Travel Writing 1800-present (Leiden University Press, 2023)
the journal article ‘Between Tourist and Traveller: The Reverend Marius Buys in Preanger (1887-1890)’ Wacana (2024)
Sejarah masa Hindia-Belanda (History during the Dutch East Indies period)

