In Brinkmann, Klaus; Dahlstrom, Daniel O. Georg Wilhelm Friedrich Hegel: Encyclopedia of the Philosophical Sciences in Basic Outline, Part 1, Science of Logic.
In Brinkmann، Klaus؛ Dahlstrom، Daniel O. Georg Wilhelm Friedrich Hegel: Encyclopedia of the Philosophical Sciences in Basic Outline, Part 1, Science of Logic (باللغة الإنجليزية).