Text in periodical Zapf, Donna. – «The World Soundscape Project revisited». – Musicworks. – No. 15 (Spring 1981). – P. 4-5.
Text in periodical von Heijne, Ingemar. – «Interview with the World Soundscape Project». – Musicworks. – No. 9 (Fall 1979). – P. 23-25.