(1992). Biological nitrogen fixation for sustainable agriculture: Extended versions of papers presented in the symposium, role of biological nitrogen fixation in sustainable agriculture at the 13th Congress of soil science, Kyoto, Japan, 1990. Kluwer Academic.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Biological Nitrogen Fixation for Sustainable Agriculture: Extended Versions of Papers Presented in the Symposium, Role of Biological Nitrogen Fixation in Sustainable Agriculture at the 13th Congress of Soil Science, Kyoto, Japan, 1990. Dordrecht: Kluwer Academic, 1992.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Biological Nitrogen Fixation for Sustainable Agriculture: Extended Versions of Papers Presented in the Symposium, Role of Biological Nitrogen Fixation in Sustainable Agriculture at the 13th Congress of Soil Science, Kyoto, Japan, 1990. Kluwer Academic, 1992.