(2019). Naturaland standards organic aquaculture: Version 05/2019.
Chicago Style aipamenaNaturaland Standards Organic Aquaculture: Version 05/2019. 2019.
MLA aipamenaNaturaland Standards Organic Aquaculture: Version 05/2019. 2019.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.