Madsen, I. H., & Tornehave, J. (1997). From calculus to cohomology: De Rham cohomology and characteristic classes. Cambridge University Press.
Lua i Stíl Chicago (17ú heag.)Madsen, I. H., agus Jørgen Tornehave. From Calculus to Cohomology: De Rham Cohomology and Characteristic Classes. Cambridge ; New York: Cambridge University Press, 1997.
Lua MLA (8ú heag.)Madsen, I. H., agus Jørgen Tornehave. From Calculus to Cohomology: De Rham Cohomology and Characteristic Classes. Cambridge University Press, 1997.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.