(1986). The world - East magnetic intensity 1985, and annual rates of change: Reduced to the epoch 1985.0 (small corrections.). Hydrographic Office.
Chicago-Zitierstil (17. Ausg.)The World - East Magnetic Intensity 1985, and Annual Rates of Change: Reduced to the Epoch 1985.0. small corrections. Taunton: Hydrographic Office, 1986.
MLA-Zitierstil (9. Ausg.)The World - East Magnetic Intensity 1985, and Annual Rates of Change: Reduced to the Epoch 1985.0. small corrections. Hydrographic Office, 1986.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.