http://www.issia.cnr.it/ http://www.ba.iac.cnr.it/wp/ https://ntnucamp.sce.ntnu.edu.tw/ http://leda.elfak.ni.ac.rs/

Gaya APA

Galilei, G. (1967). Dialogue Concerning the Two Chief World System (1). : University of California Press.

Gaya MLA

Galilei, Galileo. "Dialogue Concerning the Two Chief World System". 1 : University of California Press, 1967. Non Fiction.