Gottstein, K., Behrmann, J., Bock-Werthmann, W., & Menache, G. (1989). Directory of international cooperation in science and technology: Index of institutions in the Federal Republic of Germany cooperating with developing countries (2., rev. and enl.ed.). Saur.
Citazione stile Chigago Style (17a edizione)Gottstein, Klaus, Jörn Behrmann, Werner Bock-Werthmann, e Georg Menache. Directory of International Cooperation in Science and Technology: Index of Institutions in the Federal Republic of Germany Cooperating with Developing Countries. 2., rev. and enl.ed. München [etc.]: Saur, 1989.
Citatione MLA (9a ed.)Gottstein, Klaus, et al. Directory of International Cooperation in Science and Technology: Index of Institutions in the Federal Republic of Germany Cooperating with Developing Countries. 2., rev. and enl.ed. Saur, 1989.