APA (7th ed.) Citation

Grossmith, G., & Grossmith, W. (1949). The diary of a nobody (Repr.). Penguin Books.

Chicago Style (17th ed.) Citation

Grossmith, George, and Weedon Grossmith. The Diary of a Nobody. Repr. Harmondsworth, Middlesex: Penguin Books, 1949.

MLA (9th ed.) Citation

Grossmith, George, and Weedon Grossmith. The Diary of a Nobody. Repr. Penguin Books, 1949.

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