APA (7th ed.) Citation

Forster, E. M. (1987). The longest journey. Penguin Books.

Chicago Style (17th ed.) Citation

Forster, E. M. The Longest Journey. Harmondsworth [etc.]: Penguin Books, 1987.

MLA (9th ed.) Citation

Forster, E. M. The Longest Journey. Penguin Books, 1987.

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