APA (7th ed.) Citation

Citrine, W. C. (1940). My Finnish diary. Penguin.

Chicago Style (17th ed.) Citation

Citrine, Walter Citrine. My Finnish Diary. Harmondsworth, Middlesex: Penguin, 1940.

MLA (8th ed.) Citation

Citrine, Walter Citrine. My Finnish Diary. Penguin, 1940.

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