APA (7th ed.) Citation

Wyndham, J. (1953). The day of the triffids (Cheap edition.). Michael Joseph.

Chicago Style (17th ed.) Citation

Wyndham, John. The Day of the Triffids. Cheap edition. London: Michael Joseph, 1953.

MLA (9th ed.) Citation

Wyndham, John. The Day of the Triffids. Cheap edition. Michael Joseph, 1953.

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