(2020). U- and E-Service, Science and Technology. Springer Berlin Heidelberg.
Chicago Style aipamenaU- and E-Service, Science and Technology. Springer Berlin Heidelberg, 2020.
MLA aipamenaU- and E-Service, Science and Technology. Springer Berlin Heidelberg, 2020.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.