APA (7th ed.) Citation

Frankel, E. G., & Chen, H. (1980). Optimization of ship routing. National Maritime Research Center.

Chicago Style (17th ed.) Citation

Frankel, Ernst G., and H. Chen. Optimization of Ship Routing. Kings Point, N.Y.: National Maritime Research Center, 1980.

MLA (9th ed.) Citation

Frankel, Ernst G., and H. Chen. Optimization of Ship Routing. National Maritime Research Center, 1980.