Penkhae Siriwan และผู้แต่งคนอื่นๆ. (1990) Education management for the generation of self-employment of graduates. National Institute of Development Administration:ม.ป.ท.Penkhae Siriwan และผู้แต่งคนอื่นๆ. 1990. Education management for the generation of self-employment of graduates. ม.ป.ท.:National Institute of Development Administration;Penkhae Siriwan และผู้แต่งคนอื่นๆ. Education management for the generation of self-employment of graduates. ม.ป.ท.:National Institute of Development Administration, 1990. Print.