APA (7th ed.) Citation

Grigson, G. (1960). The Shell guide to flowers of the countryside. Phoenix House.

Chicago Style (17th ed.) Citation

Grigson, Geoffrey. The Shell Guide to Flowers of the Countryside. London: Phoenix House, 1960.

MLA (9th ed.) Citation

Grigson, Geoffrey. The Shell Guide to Flowers of the Countryside. Phoenix House, 1960.

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