Harald Arnkil (2013). “Music, painting, colour and abstraction” in Exhibition Catalogue: Soiva kuva/Resonant Image – Tapio Lötjönen, Juan Antonio Muro and Tapani Tamminen 13.12013.–12.1.2014. Juhani Pallasmaa (ed.), Rovaniemi Art Museum, Rovaniemi, Finland. DOWNLOAD

Harald Arnkil (2012). “Lightness and Brightness and Other Confusions”. Colour and Light. Concepts and confusions. Harald, A. (ed.). Helsinki: Aalto ARTS Books, p. 67–101. 

Harald Arnkil (2012) “Seeing and Perceiving” in Colour and Light. Concepts and confusions. Harald, A. (ed.). Helsinki: Aalto ARTS Books, p. 34–44.

Harald Arnkil (1999) ”What the eye hears and the ear sees”, in the Festschrift: Ben af Schulten 60 years. Helsinki: Galerie Anhava.