Denner, W., Cockcroft, A.(2011).Magnetic Compass Deviation and Correction : A Manual of the Theory of the Deviations and Mechanical Correction of Magnetic Compasses in Ships Third Edition 2011 (Ed. 3 Reprinted 2).United Kingdom:Brown, Son & Ferguson, Ltd., Publishers.
Gaya MLA
Denner, W.., Cockcroft, A.N.."Magnetic Compass Deviation and Correction : A Manual of the Theory of the Deviations and Mechanical Correction of Magnetic Compasses in Ships Third Edition 2011".Ed. 3 Reprinted 2United Kingdom:Brown, Son & Ferguson, Ltd., Publishers,2011.Text.