APA (7th ed.) Citation

Posidonio & Theiler, W. (1982). Die Fragmente. Walter de Gruyter.

Chicago Style (17th ed.) Citation

Posidonio and Willy Theiler. Die Fragmente. Berlin [etc.]: Walter de Gruyter, 1982.

MLA (9th ed.) Citation

Posidonio and Willy Theiler. Die Fragmente. Walter de Gruyter, 1982.

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