FAO. (1993). FAO plant production and protection paper N.117: Quality declared seed: technical guidelines for standards and procedures. Rome: FAO.
Chicago Style aipamenaFAO. FAO Plant Production and Protection Paper N.117: Quality Declared Seed: Technical Guidelines for Standards and Procedures. Rome: FAO, 1993.
MLA aipamenaFAO. FAO Plant Production and Protection Paper N.117: Quality Declared Seed: Technical Guidelines for Standards and Procedures. Rome: FAO, 1993.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.