Hardisari, R. and Supartuti, S. 2016. Kappa Test with Platelet Rich Plasma and Platelet Poor Plasma Blood Preparation Method for Examining The Value of Activated Partial Tromboplastin Time and Plasma Protrombin Time. Jurnal Teknologi Kesehatan (Journal of Health Technology). 12, 2 (Sep. 2016), 77–81.