(2019). 乒乓世界．2019,no.9,11-12.
Chicago Style aipamena乒乓世界．2019,no.9,11-12. 2019.
MLA aipamena乒乓世界．2019,no.9,11-12. 2019.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.
APA aipamena
(2019). 乒乓世界．2019,no.9,11-12.
Chicago Style aipamena乒乓世界．2019,no.9,11-12. 2019.
MLA aipamena乒乓世界．2019,no.9,11-12. 2019.