APA (7th ed.) Citation

Christiansen, M., Fagerholt, K., & Pisinger, D. Fifty years on maritime transportation. Elsevier.

Chicago Style (17th ed.) Citation

Christiansen, Marielle, Kjetil Fagerholt, and David Pisinger. Fifty Years on Maritime Transportation. Elsevier.

MLA (9th ed.) Citation

Christiansen, Marielle, et al. Fifty Years on Maritime Transportation. Elsevier.