Ugly's has always been the standard around here. Don, Uglys was issued to me by the IBEW in my apprenticeship, since we came through about the same time didn't you use it ? If they quit publishing Uglys I've always said I'm leaving the trade. It is also the standard used locally for most every test.
Single phase, 2 wire = 2K X L X I / Cm
3 phase, 3 wire = 1.73K X L X I/ Cm
K = 12.9 for copper, 21.2 for aluminum
L = length, I = amps, and Cm = Circular mil area from Chap 9, Table 8
The only thing you have to check occasionally is the "K" rating, that has moved around since I came in the trade because the cma table was revised.
I've been around long enough that #10 wire was 10,000 cm, it has been revised to 10,380, but the formula has pretty much remained the same.