APA (7th ed.) Citation

Merkle, D., B. Schrader, & M. Thomes. (1990). Hydraulics. Festo Didactic.

Chicago Style (17th ed.) Citation

Merkle, D., B. Schrader, and M. Thomes. Hydraulics. Germany: Festo Didactic, 1990.

MLA (8th ed.) Citation

Merkle, D., et al. Hydraulics. Festo Didactic, 1990.