APA (7th ed.) Zitazioa
SpringerLink (Online service) & Lai, K. Journal of Shipping and Trade. Springer Singapore : Imprint: Springer.
Chicago Style (17th ed.) Zitazioa
SpringerLink (Online service) eta Kee-Hung Lai. Journal of Shipping and Trade. Singapore: Springer Singapore : Imprint: Springer.
MLA (9th ed.) Zitazioa
SpringerLink (Online service) eta Kee-Hung Lai. Journal of Shipping and Trade. Springer Singapore : Imprint: Springer.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.