APA (7th ed.) Citation

Gardiner, P., & Schopenhauer, A. (1963). Schopenhauer / by P. Gardiner. Penguin.

Chicago Style (17th ed.) Citation

Gardiner, P., and Arthur Schopenhauer. Schopenhauer / by P. Gardiner. Penguin, 1963.

MLA (9th ed.) Citation

Gardiner, P., and Arthur Schopenhauer. Schopenhauer / by P. Gardiner. Penguin, 1963.

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