Παραπομπή σε μορφή APA (7η εκδ.)

Seatrade Compania Maritima Officers Training. OPA 90: Vessel response plan comprehension test. [s.n.].

Παραπομπή σε μορφή Chicago (17η εκδ.)

Seatrade Compania Maritima Officers Training. OPA 90: Vessel Response Plan Comprehension Test. [s.l.]: [s.n.].

Παραπομπή σε μορφή MLA (9th εκδ.)

Seatrade Compania Maritima Officers Training. OPA 90: Vessel Response Plan Comprehension Test. [s.n.].