* _Omvandlingar av ett landskap:Ngorongoro-kratern i Tanzania_ (1996)
* _Natur och kulturskydd i Tanzania:historia, upplevelser, perspektiv_ (1998)
* _Afrika:Mångfald, konflikter, perspektiv_ (2000)
* _Tanzania:en geografisk undersökning_ (2002)
* _The Serengeti:History and Future of a National Park_ (2004)
* _Wild Africa:Nature, Culture, and Conservation_ (2006)
* _Ngorongoro Crater:A Natural History_ (2008)
* _Tanzania:En reseguide_ (2010)
* _Afrikanska nationalparker:historia, utveckling, betydelse_ (2012)
* _Afrika och Europa:History and Present of a Tense Relationship_ (2014)
Artiklar
* "The Conservation of Wildlife in Tanzania" (1995)
* "Turism and Conservation in Tanzania" (1996)
* "The Serengeti National Park:A World Heritage Site" (1997)
* "The Ngorongoro Crater:A Natural Wonder of the World" (1998)
* "Wildlife Conservation in Africa:Challenges and Opportunities" (1999)
* "Africa and Europe:A History of Conflict and Cooperation" (2000)
* "The Future of African National Parks" (2001)
* "Tanzania:A Country in Transition" (2002)
* "The Serengeti:A Fragile Ecosystem" (2003)
* "The Ngorongoro Crater:A Model for Sustainable Development" (2004)