APA (7th ed.) Citation

DUNCALF. (1976). The Guinness book of plant: Facts and feats. Guinness Superlatives.

Chicago Style (17th ed.) Citation

DUNCALF. The Guinness Book of Plant: Facts and Feats. Middlesex: Guinness Superlatives, 1976.

MLA (8th ed.) Citation

DUNCALF. The Guinness Book of Plant: Facts and Feats. Guinness Superlatives, 1976.

Warning: These citations may not always be 100% accurate.