APA (7e ed.) Bronvermelding

U.S. Air Force, Cambridge Research Center. Air Force Surveys in Geophysics. Geophysics Research Directorate.

Chicago (17e ed.) Bronvermelding

U.S. Air Force, Cambridge Research Center. Air Force Surveys in Geophysics. Bedford, Mass: Geophysics Research Directorate.

MLA (8e ed.) Bronvermelding

U.S. Air Force, Cambridge Research Center. Air Force Surveys in Geophysics. Geophysics Research Directorate.

Let op: Deze citaties zijn niet altijd 100% accuraat.