Παραπομπή σε μορφή APA (7η εκδ.)

Astle, W. E. (1986). The safe port or berth reachable on arrival: Charterers' and shipowners' responsibilities and liabilities. Fairplay Publications.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Astle, W. E. The Safe Port or Berth Reachable on Arrival: Charterers' and Shipowners' Responsibilities and Liabilities. Surrey: Fairplay Publications, 1986.

Παραπομπή σε μορφή MLA (9th εκδ.)

Astle, W. E. The Safe Port or Berth Reachable on Arrival: Charterers' and Shipowners' Responsibilities and Liabilities. Fairplay Publications, 1986.