1. Determinants of foreign coverage in U.S. newspapers,1984
2. Old colonial ties and news coverage of Africa,1985,
3. International news in six American newspapers: Last look at a bipolar world,1993,
4. The New York Times coverage of equatorial and lower Africa;Journal of Communication,1979
5. A correlation analysis of international newspaper coverage and international economic, communication, and demographic relationships;Communication Yearbook,1977