Piggott, W. R. (1975). High-latitude supplement to the URSI handbook on ionogram interpretation and reduction. World Data Center A for Solar-Terrestrial Physics.
Chicago Style (17th ed.) CitationPiggott, W. R. High-latitude Supplement to the URSI Handbook on Ionogram Interpretation and Reduction. Boulder, Colorado: World Data Center A for Solar-Terrestrial Physics, 1975.
MLA (9th ed.) CitationPiggott, W. R. High-latitude Supplement to the URSI Handbook on Ionogram Interpretation and Reduction. World Data Center A for Solar-Terrestrial Physics, 1975.
Warning: These citations may not always be 100% accurate.