APA Citation

Wyndham, J. (1951). The Day of the triffids. Penguin Books.

Chicago Style Citation

Wyndham, John. The Day of the Triffids. Penguin Books, 1951.

MLA Citation

Wyndham, John. The Day of the Triffids. Penguin Books, 1951.

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