Παραπομπή APA

Firth, F. E. (1969). The Encyclopedia of marine resources. Van Nostrand reinhold company.

Παραπομπή Chicago Style

Firth, Frank E. The Encyclopedia of Marine Resources. London: Van Nostrand reinhold company, 1969.

Παραπομπή MLA

Firth, Frank E. The Encyclopedia of Marine Resources. Van Nostrand reinhold company, 1969.