National Symposium on Expansive Soils Harcourt-Butler Technological Institute. (1977). Proceedings of the first National Symposium on Expansive Soils held at Harcourt-Butler Technological Institute, Kanpur (India), 19-21, December 1977. Indian Geotechnical Society.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)National Symposium on Expansive Soils Harcourt-Butler Technological Institute. Proceedings of the First National Symposium on Expansive Soils Held at Harcourt-Butler Technological Institute, Kanpur (India), 19-21, December 1977. [New Delhi]: Indian Geotechnical Society, 1977.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)National Symposium on Expansive Soils Harcourt-Butler Technological Institute. Proceedings of the First National Symposium on Expansive Soils Held at Harcourt-Butler Technological Institute, Kanpur (India), 19-21, December 1977. Indian Geotechnical Society, 1977.