Massachusetts Horticultural Society. Plant buyers guide of seed and plant materials in the trade. Massachusetts Horticultural Society.
Chicago Style (17th ed.) CitationMassachusetts Horticultural Society. Plant Buyers Guide of Seed and Plant Materials in the Trade. Boston: Massachusetts Horticultural Society.
MLA (9th ed.) CitationMassachusetts Horticultural Society. Plant Buyers Guide of Seed and Plant Materials in the Trade. Massachusetts Horticultural Society.
Warning: These citations may not always be 100% accurate.