* _Transformations of a landscape:the Ngorongoro crater in Tanzania_ (1996)
* _Φύση και πολιτιστική προστασία στην Τανζανία:ιστορία, εμπειρίες, προοπτικές_ (1998)
* _Africa:Diversity, Conflicts, Perspectives_ (2000)
* _Τανζανία:μια γεωγραφική έρευνα_ (2002)
* _The Serengeti:History and Future of a National Park_ (2004)
* _Wild Africa:Nature, Culture, and Conservation_ (2006)
* _The Ngorongoro Crater:A Natural History_ (2008)
* _Tanzania:A Travel Guide_ (2010)
* _African National Parks:History, Development, Significance_ (2012)
* _Africa and Europe:History and Present of a Tense Relationship_ (2014)
Άρθρα
* "The Conservation of Wildlife in Tanzania" (1995)
* "Tourism and Conservation in Tanzania" (1996)
* «The Serengeti National Park:A World Heritage Site» (1997)
* "The Ngorongoro Crater:A Natural Wonder of the World" (1998)
* "Διατήρηση της άγριας ζωής στην Αφρική:Προκλήσεις και ευκαιρίες" (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)