Thomas, G. S. (1984). Perennial garden plants, or, The modern florilegium: A concise account of herbaceous plants, including bulbs, for general garden use (Revised and enlarged edition, second edition.). J.M. Dent in association with the Royal Horticultural Society.
Chicago Style (17th ed.) CitationThomas, Graham Stuart. Perennial Garden Plants, or, The Modern Florilegium: A Concise Account of Herbaceous Plants, Including Bulbs, for General Garden Use. Revised and enlarged edition, second edition. London: J.M. Dent in association with the Royal Horticultural Society, 1984.
MLA (9th ed.) CitationThomas, Graham Stuart. Perennial Garden Plants, or, The Modern Florilegium: A Concise Account of Herbaceous Plants, Including Bulbs, for General Garden Use. Revised and enlarged edition, second edition. J.M. Dent in association with the Royal Horticultural Society, 1984.