INGHAM, A. (1975). Sea Surveying. John Wiley & Sons.
Lua i Stíl Chicago (17ú heag.)INGHAM, A.E. Sea Surveying. John Wiley & Sons, 1975.
Lua MLA (8ú heag.)INGHAM, A.E. Sea Surveying. John Wiley & Sons, 1975.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.