Παραπομπή APA

Norby, H. (1944). Questions and answers for deck officers. McGraw hill.

Παραπομπή Chicago Style

Norby, H. Questions and Answers for Deck Officers. New york: McGraw hill, 1944.

Παραπομπή MLA

Norby, H. Questions and Answers for Deck Officers. McGraw hill, 1944.