Dur, A. (1986). Mobius Functions, Incidence Algebras and Power Series Representations. Berlin: Springer-Verlag.
Dyfyniad Arddull ChicagoDur, Arne. Mobius Functions, Incidence Algebras and Power Series Representations. Berlin: Springer-Verlag, 1986.
Dyfyniad MLADur, Arne. Mobius Functions, Incidence Algebras and Power Series Representations. Berlin: Springer-Verlag, 1986.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.