Παραπομπή APA

Derrick, D. (1981). Navigation For Offshore and Ocean Sailors. David&Charles.

Παραπομπή Chicago Style

Derrick, David. Navigation For Offshore and Ocean Sailors. London: David&Charles, 1981.

Παραπομπή MLA

Derrick, David. Navigation For Offshore and Ocean Sailors. David&Charles, 1981.