Gaya APA

Squadrons, U, S, P. (2006). The boatowner's guide to GMDSS and marine radio: marine distress and safety communications in the digital age . : McGraw-Hill Companies.

Gaya MLA

Squadrons, United, States, Power. "The boatowner's guide to GMDSS and marine radio: marine distress and safety communications in the digital age". : McGraw-Hill Companies, 2006. Text.