Garner, C. L., Captain (retired). A Geodetic Measurement of Unusually High Accuracy(PDF). U.S. Coast and Geodetic Survey Journal (Coast and Geodetic Survey). April 1949: 68–74 [August 13, 2009]. (原始内容(PDF)存档于2009-03-25).
Garner, C. L., Captain (retired). A Geodetic Measurement of Unusually High Accuracy(PDF). U.S. Coast and Geodetic Survey Journal (Coast and Geodetic Survey). April 1949: 68–74 [August 13, 2009]. (原始内容(PDF)存档于2009-03-25).