(1973). Reason and action in the transformation of the world ; Philosophy in the process of the scientific and technological revolution ; Knowledge and values in the scientific and technological era ; Structure and methods of contemporary scientific knowledge. Sofia Pr..
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Reason and Action in the Transformation of the World ; Philosophy in the Process of the Scientific and Technological Revolution ; Knowledge and Values in the Scientific and Technological Era ; Structure and Methods of Contemporary Scientific Knowledge. Sofia: Sofia Pr., 1973.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Reason and Action in the Transformation of the World ; Philosophy in the Process of the Scientific and Technological Revolution ; Knowledge and Values in the Scientific and Technological Era ; Structure and Methods of Contemporary Scientific Knowledge. Sofia Pr., 1973.