Frost A. (1978). The principles and practice of navigation. Glasgow/ Brown,son & Ferguson.
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Dyfyniad Arddull Chicago
Frost A. The Principles and Practice of Navigation. New York: Glasgow/ Brown,son & Ferguson, 1978.
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Dyfyniad MLA
Frost A. The Principles and Practice of Navigation. Glasgow/ Brown,son & Ferguson, 1978.
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Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.