APA (7th ed.) Citation

Galen & Singer, P. N. Galen: Psychological writings.

Chicago Style (17th ed.) Citation

Galen and P. N. Singer. Galen: Psychological Writings.

MLA (8th ed.) Citation

Galen and P. N. Singer. Galen: Psychological Writings.

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