APA (7th ed.) Citation

Popper, K. R. (2009). The worlds 1, 2, and 3. Myths and mythologies, 96-108.

Chicago Style (17th ed.) Citation

Popper, Karl R. "The Worlds 1, 2, and 3." Myths and Mythologies 2009: 96-108.

MLA (9th ed.) Citation

Popper, Karl R. "The Worlds 1, 2, and 3." Myths and Mythologies, 2009, pp. 96-108.

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