Gambaran Bali Dalam Brosur Promosi Pariwisata Hindia Belanda Tahun 1920-1940 = The overview of Bali in Dutch East Indies tourism brochure 1920-1940

Kegiatan perdagangan Jepang di Hindia Belanda (Indonesia) pada tahun 1920-1940 = Japanese trade activities in the dutch East Indies (Indonesia) in 1920 to 1940

Prangko Edisi Jeugdzorg (1930) dan Witte kruis (1931) sebagai Media Promosi Turisme di Hindia-Belanda = The Jeugdzorg (1930) and Witte Kruis (1931) stamps edition as tourism promotion media in Dutch East Indies

Dinamika kehidupan orang Belanda di Hindia-Belanda dalam buku our childhood in the former colonial dutch east indies (2011) = Dutch life dynamics in Dutch east Indies in our childhood in the former colonial Dutch east Indies (2011)

Dari Vreemdelingenverkeer ke toeristenverkeer: dinamika pariwisata di Hindia Belanda 1891-1942 = From Vreemdelingenverkeer to toeristenverkeer tourism dynamics in the dutch East Indies 1891-1942