APA (7th ed.) Citation

Sommerville, W. (1927). How a tree grows. Oxford University Press.

Chicago Style (17th ed.) Citation

Sommerville, William. How a Tree Grows. London: Oxford University Press, 1927.

MLA (9th ed.) Citation

Sommerville, William. How a Tree Grows. Oxford University Press, 1927.

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