APA (7th ed.) Citation

Hempel, J. C., Bornemann, O. v., & Petersen, J. (1963). Your ship and its maintenance. J.C. Hempel's Foundation.

Chicago Style (17th ed.) Citation

Hempel, J. C., Ove von Bornemann, and Jorgen Petersen. Your Ship and Its Maintenance. Cophenhagen: J.C. Hempel's Foundation, 1963.

MLA (9th ed.) Citation

Hempel, J. C., et al. Your Ship and Its Maintenance. J.C. Hempel's Foundation, 1963.