Dunlap & Shufeldt. (1972). Dutton's navigation and piloting (20th edition.). Naval Institute.
Chicago Style (17th ed.) CitationDunlap and Shufeldt. Dutton's Navigation and Piloting. 20th edition. Annapolis: Naval Institute, 1972.
MLA (8th ed.) CitationDunlap and Shufeldt. Dutton's Navigation and Piloting. 20th edition. Naval Institute, 1972.
Warning: These citations may not always be 100% accurate.