Duncalf, W. G. (1976). Guinness book of plant: Facts and feats. Guinness superlatives.
Chicago Edition CitationDuncalf, W G. Guinness Book of Plant: Facts and Feats. London: Guinness superlatives, 1976.
MLA Edition CitationDuncalf, W G. Guinness Book of Plant: Facts and Feats. Guinness superlatives, 1976.
Warning: These citations may not always be 100% accurate.