- GeoRef, Copyright 2004, American Geological Institute. Reference includes data from Bibliography and Index of Geology Exclusive of North America, Geological Society of America, Boulder, CO, United States
With reference to discussion by C. K. Burton of conclusions in a paper published in 1965 (for reference, see this Bibliography Vol. 31, No. 9, 19 E67-08168), evidence is cited that supports a late Silurian-early Devonian rather than middle to upper Carboniferous age for the Langkawi folding phase in Malaya.