Gaya APA

Saitta, L., Zucker, J. (2005). Abstraction, Reformulation and Approximation (1st ed.). Berlin, Heidelberg: Springer.

Gaya MLA

Saitta, Lorenza.., Zucker, Jean-Daniel.. "Abstraction, Reformulation and Approximation". 1st ed. Berlin, Heidelberg: Springer, 2005. E Book.