FAO. (1995). International standards for phytosanitary measures: Reference standard: Principles of plant quarantine as related to international trade. Rome, Italy: FAO.
Chicago-tyylinen lähdeviittausFAO. International Standards for Phytosanitary Measures: Reference Standard: Principles of Plant Quarantine As Related to International Trade. Rome, Italy: FAO, 1995.
MLA-viiteFAO. International Standards for Phytosanitary Measures: Reference Standard: Principles of Plant Quarantine As Related to International Trade. Rome, Italy: FAO, 1995.
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