1. Asian Medical Systems,1976
2. Integrale Geneeskunde (Integrated Medicine);Aakster,1989
3. Davidson's Principles and Practice of Medicine—A Textbook for Students and Doctors;Macleod,1987
4. Concepts of Health and Disease—Interdisciplinary Perspectives;Caplan,1981
5. De Ontwikkeling van Gefundeerde Theorie (Grounded Theory);Glaser,1976