TRIANGLE_WANDZURA_RULE is a C++ library which can return any of six Wandzura rules for high order quadrature over the interior of a triangle in 2D.
There are six rules, which have polynomial degree of exactness of 5, 10, 15, 20, 25, and 30.
The computer code and data files described and made available on this web page are distributed under the GNU LGPL license.
TRIANGLE_WANDZURA_RULE is available in a C++ version and a FORTRAN90 version and a MATLAB version
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You can go up one level to the C++ source codes.