Calder, N.(2012).How to Read a Nautical Chart : a Complete Guide to Using and Understanding Electronic and Paper Charts (Edisi Kedua).United States:Penerbit The McGraw-Hill Companies.
Gaya MLA
Calder, Nigel."How to Read a Nautical Chart : a Complete Guide to Using and Understanding Electronic and Paper Charts".Edisi KeduaUnited States:Penerbit The McGraw-Hill Companies,2012.Text.