Grobbelaar, H. W., K. R. Duthie, and E. R. Fanton. “Effect of a Group Multimodal Anxiety Management Programme on Competitive State Anxiety and Self-Confidence of Amateur Golfers”. South African Journal for Research in Sport, Physical Education and Recreation, vol. 40, no. 2, Aug. 2018, pp. 69-80, doi:10.4314/sajrs.v40i2.